Imad A Shaheen | Ain Shams University (original) (raw)

Papers by Imad A Shaheen

Research paper thumbnail of Efficient PAPR Reduction Method for FBMC based Systems Using Isosceles Trapezoidal Distribution Transforms

RS Open Journal on Innovative Communication Technologies, 2022

Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) has been one of ... more Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) has been one of the key proposed candidate methods for fifth-generation wireless communication and beyond systems (5G) due to its many attractive properties and features related to spectral confinement. However, the applicability of the FBMC/OQAM modulation method is limited mainly by its high peak to average power ratio (PAPR), which can significantly reduce system efficiency. In this paper, a new technique based on the Isosceles Trapezoidal Distribution Transform (ITDT) is proposed to reduce the PAPR of FBMC/OQAM transceiver by transforming original Gaussian distributed FBMC signals into an Isosceles Trapezoidal, while maintaining a constant average output power level. The general formulas of the proposed scheme are derived and the trade-off between PAPR reduction and BER performance is accomplished by properly choosing variable parameters which are required for controlling the nonlinearity of the Companding function used in the proposed technique. The presented simulation results demonstrate that the proposed scheme can offer substantially better overall performance for FBMC based systems in terms of PAPR reduction, BER performance, and bandwidth efficiency compared to the other competitive methods.

Research paper thumbnail of Combined DHT Precoding and ALaw Companding for PAPR Reduction in FBMC / OQAM signals

The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is being stu... more The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is being studied by researchers as preferable waveforms support the fifth generation (5G) wireless communication. However, a non-constant envelope with high peaks is a main disadvantage of FBMC. The peak power of a signal is an analytical intention factor for communication systems and it is necessary to reduce it as much as possible. In this paper, hybrid schemes are investigated with the combination of the discrete Hartly transform (DHT) Precoding technique and A-Law companding technique to reduce PAPR in FBMC systems. The numerical results verify that the FBMC systems with all Precoding technique with using A-law companding can improve PAPR performance of the signals greatly with satisfying the performance of BER condition.

Research paper thumbnail of Complexity Analysis of FBMC/OQAM Transceiver using SRRC Polyphase Filter

2019 International Conference on Promising Electronic Technologies (ICPET), 2019

Nowadays, Filter Bank Multicarrier with used Offset Modulation system which known as FBMC/OQAM ha... more Nowadays, Filter Bank Multicarrier with used Offset Modulation system which known as FBMC/OQAM has been studying by many researchers at the different universities to support the requirement of the next wireless communication system which known as a fifth generation (5G) system. Moreover, FBMC/OQAM system used to provides a high data rate to the user with high bandwidth efficiency, and low impulse noise. In this paper, we design FBMC/OQAM transceiver based on the SRRC prototype filter, and then the performances of transceiver are evaluated. Moreover, our analytical model is further extended in order to analyse the complexity design of the FBMC / OQAM transceiver with used filters.

Research paper thumbnail of Modified Alternating Signal (AS) Scheme for Reducing PAPR of FBMC/OQAM Signal

2018 13th International Conference on Computer Engineering and Systems (ICCES), 2018

5th generation upcoming applications require an alternative multicarrier modulation (MCM) scheme ... more 5th generation upcoming applications require an alternative multicarrier modulation (MCM) scheme to support high data rate, high bandwidth efficiency, and low impulse noise. Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) system is the most suitable scheme to meet this requirement for next wireless communication system. However, as an MCM, the high Peak to Average Power Ratio (PAPR) is a significant problem from which the FBMC/OQAM suffers causing reduced power efficiency. In this paper, a modified alternative signal with sequential optimization(MAS-SO) algorithm is used for PAPR reduction. The traditional alternative signal (T-AS) algorithm is suggested to reduce the PAPR of the traditional multicarrier signal. However, it did not give a satisfactory PAPR reduction and so the algorithm has been modified to provide better PAPR reduction performance with low complexity.The simulation results from the complementary cumulative distribution function (CCDF) of PAPR show that the proposed scheme can achieve about 3.45 dB PAPR performance compared to existing T-AS scheme.

Research paper thumbnail of African Pentecostalism and World Christianity: Essays in Honor of J. Kwabena Asamoah-Gyadu, edited by Nimi Wariboko and Adeshina Afolayan

Research paper thumbnail of Design New Companding Scheme to Reduced PAPR for FBMC/OQAM in 5G Communication

2020 International Conference on Promising Electronic Technologies (ICPET), 2020

In last few years, there is an increased requirement in the demand for high data rates over the w... more In last few years, there is an increased requirement in the demand for high data rates over the wireless communication system. This demand motivated the researchers worldwide to move to higher generations of wireless communication systems characterized by high data rate, low drive motivation clamor, and high information move limit efficiency transmission. Therefore, Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) might be outstanding amongst other waveform utilized in the up and coming age of remote correspondence. But it is undergoing from a high peak to average power ratio. In this paper, we propose a new scheme called Weibull a nonlinear companding “WC” to reduce PAPR in the FBMC. This scheme is based on the transform of the originally Gaussian distributed FBMC signal magnitude into Weibull Distribution to effectively reduce the PAPR while preserving the BER performance. The reproduction results show that the proposed WC conspire viably lessen the PAPR by decreasing the pinnacle flags and developing the little signals, adequate BER execution

Research paper thumbnail of Absolute Exponential Companding to Reduced PAPR for FBMC/OQAM

2017 Palestinian International Conference on Information and Communication Technology (PICICT), 2017

Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) may be one of th... more Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) may be one of the best waveform used in the next generation wireless communication system (5G system). Moreover, The FBMC/OQAM system supports high data rate, low impulse noise and high bandwidth efficiency. However, Similar to Orthogonal frequency-division multiplexing OFDM system, the FBMC/OQAM system are the type of multicarrier modulation system (MCM) which suffers from high peak to average power ratio (PAPR) problem cases reduced power efficiency. In this paper, We propose a nonlinear companding scheme called 'Absolute Exponential Companding' (AEXC) to reduced PAPR in FBMC/OQAM system. However, the FBMC/OQAM system is employed with prototype filter bank using square root raised cosine (SRRC) filter. The simulation results show that, The proposed schemes highly effectively reduces the PAPR in the system by compressing the peak signals and expanding the small signals.

Research paper thumbnail of Design and Implementation of FBMC/OQAM Transceiver for 5G Wireless Communication System

2019 International Conference on Promising Electronic Technologies (ICPET), 2019

Recently, Many Multicarrier Communication Techniques (MCT) has been developed to support requirem... more Recently, Many Multicarrier Communication Techniques (MCT) has been developed to support requirements for next wireless communication, namely the fifth generation (5G) wireless communication. The Filter Bank Multicarrier /Offset Quadrature Amplitude Modulation (FBMC/OQAM) system is one of the proposed modulation schemes for the next wireless communication system because it provides high data rate and it has the benefit of very low side lobes leading to less inter-carrier interference (IC). The main goal of this research is to design and simulate the FBMC/OQAM transceiver physical layer with Square Root Raised Cosine Filter (SRRC) Prototype filter. The FBMC/OQAM transceiver system is built in VHDL for simulation and implementation on an FPGA. Moreover, the Physical layer will be illustrated along with a detailed simulation of the FBMC/OQAM system to study the effect of various design parameters. VHDL will be used for register-transfer level (RTL) description and FPGA synthesis tools will be used for performance analysis of the transceiver. Moreover, The RTL coding of VHDL will be used to provide a high-level design flow for developing and validating the transceiver system. The ISIM Xilinx edition will be used for functional simulation and verification. The performance of transceiver implementation was assessed through some parameters such as resource usage, power usage, latency, and throughput. It is found that the FBMC/OQAM transceiver has good resources usage and power consumption. Then, is possible to conclude that FBMC/OQAM system is a viable candidate waveform for 5G.

Research paper thumbnail of PAPR Reduction of FBMC/OQAM Systems Based on Combination of DST Precoding and A-law Nonlinear Companding Technique

2017 International Conference on Promising Electronic Technologies (ICPET), 2017

The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is considere... more The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is considered as a most efficient technique for next wireless communication systems 5G due to its higher spectral bandwidth efficiency, robustness to frequency-selective fading channels, etc. However, the biggest disadvantage to working with FBMC system is its high peak-to-average power ratio (PAPR) leads to severe intercarrier interference, out-of-band radiation, and poor bit error rate performance because of the nonlinearity of the high power amplifier. In this paper, we investigate a low complexity hybrid scheme using the combination of the Discrete Sine Transform (DST) Precoding technique and A Law Nonlinear companding technique to reduce PAPR in FBMC system. The numerical results verify that the FBMC systems with our proposed schemes can improve PAPR performance of the signals greatly with satisfying the performance of BER condition. It can reduced PAPR about 84% of original PAPR.

Research paper thumbnail of Performance evaluation of PAPR reduction in FBMC system using nonlinear companding transform

ICT Express, 2019

Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is one of the be... more Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is one of the best waveforms used in 5G communications. The FBMC is a multicarrier modulation system (MCM) which suffers from high peak to average power ratio (PAPR) causing a reduction in power efficiency. Nonlinear companding techniques are widely used to reduce the peak-to-average-power ratio (PAPR). In this paper, we have evaluated the performance of different non-linear companding techniques to reduce the PAPR in FBMC/OQAM system while achieving good Bit Error rate. We assessed the hyperbolic tangent, the error function, the logarithmic function, the A-law, and Mu-law companding techniques. It is found that the best companding function is the Mu-law.

Research paper thumbnail of Proposed New Schemes to Reduce PAPR for STBC MIMO FBMC systems

Communications on Applied Electronics, 2017

Filter bank multicarrier (FBMC) system support better spectral efficiency and high data rate comp... more Filter bank multicarrier (FBMC) system support better spectral efficiency and high data rate compared to OFDM system. However, the capacity of FBMC system can be increased significantly by occupying Multiple Input and Multiple Output MIMO system. The combination of MIMO and FBMC system may be used for next communication system 5G to support high spectral efficiency. The major disadvantage of FBMC MIMO system are high peak to average power ratio (PAPR) which reduced the performance of the FBMC system .There are many reduction techniques have been used to reduce PAPR. However, The nonlinear companding technique and Precoding system used widely to reduced peak to average power ratio (PAPR) for Multicarrier Modulation(MCM) System. In this paper, we Proposed new schemes based on the combination of Walsh-Hadamard Transform (WHT) Precoding with the companding technique based on the A-law and Mu-law technique to reduce PAPR for MIMO FBMC system with using Space Frequency Block Coding (STBC). Moreover, the Precoding Technique used in the frequency domain and nonlinear companding technique in the time domain. However, simulation results show that the combination of WHT precoding with A-law companding can achieve a better PAPR reduction and bit error rate(BER) performance compared to the combination of the WHT precoding with Mu companding technique.

Research paper thumbnail of Capacity of FBMC/OQAM Transceiver System with SRRC Filter and Intrinsic Interference for 5G Wireless Communication System

2021 Palestinian International Conference on Information and Communication Technology (PICICT), 2021

Research paper thumbnail of Modified Square Rooting Companding Technique to Reduced PAPR for FBMC/OQAM

Multicarrier modulation (MCM) have become a fast developing area in wireless communication system... more Multicarrier modulation (MCM) have become a fast developing area in wireless communication system. The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) system may be the most popular multicarrier modulation technique used for next generation wireless communication technology 5G. It has several advantages such as supporting high data rate, low impulse noise and eliminating inter symbol interference (ISI), inter-carrier interference. However, the main challenging problems of FBMC/OQAM system is the high peak to average power ratio (PAPR). In this paper, we used Square Rooting Companding Technique (SQRT) to reduce the PAPR in the FBMC system, then we modified the SQRT scheme to new scheme which namely by Rooting Companding Technique (RCT). Moreover, new techniques are analyzed with CCDF characteristics and BER Performances. However, the simulation result shows the proposed RCT schemes given significant improvement in the PAPR reduction and increasing BER...

Research paper thumbnail of PAPR reduction for FBMC/OQAM using hybrid scheme of different Precoding transform and mu-law companding

International Journal of Engineering & Technology

The filter banks multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is developi... more The filter banks multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is developing multicarrier modulation technique used in the next wireless communication system (5G). FBMC/OQAM supports high data rate and high band width efficiency. However, one of the major drawbacks of FBMC system is high peak to Average Power Ratio (PAPR) of the transmitted signal, which causes serious degradation in performance of the system. Therefore, it is required to use a proper PAPR scheme at the transmitter to reduce the PAPR. In this paper, a hybrid scheme is investigated with the combination of preceding transform technique and Mu Law Companding technique to reduce PAPR in FBMC systems. Moreover, four preceding techniques are examined to find the best Precoding technique which can be used with Mu law commanding. We assessed the discrete Hartley transform (DHT). The discrete cosine transformed (DCT), the Discrete Sine Transform (DST), and the Walsh Hadamard transforms (WHT) which are ...

Research paper thumbnail of Combined DHT Precoding and A-Law Companding for PAPR Reduction in FBMC/OQAM signals

The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is being stu... more The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is being studied by researchers as preferable waveforms support the fifth generation (5G) wireless communication. However, a non-constant envelope with high peaks is a main disadvantage of FBMC. The peak power of a signal is an analytical intention factor for communication systems and it is necessary to reduce it as much as possible. In this paper, hybrid schemes are investigated with the combination of the discrete Hartly transform (DHT) Precoding technique and A-Law companding technique to reduce PAPR in FBMC systems. The numerical results verify that the FBMC systems with all Precoding technique with using A-law companding can improve PAPR performance of the signals greatly with satisfying the performance of BER condition.

Research paper thumbnail of Proposed New Schemes to Reduce PAPR for STBC MIMO FBMC systems

Filter bank multicarrier (FBMC) system support better spectral efficiency and high data rate comp... more Filter bank multicarrier (FBMC) system support better spectral efficiency and high data rate compared to OFDM system. However, the capacity of FBMC system can be increased significantly by occupying Multiple Input and Multiple Output MIMO system. The combination of MIMO and FBMC system may be used for next communication system 5G to support high spectral efficiency. The major disadvantage of FBMC MIMO system are high peak to average power ratio (PAPR) which reduced the performance of the FBMC system .There are many reduction techniques have been used to reduce PAPR. However, The nonlinear companding technique and Precoding system used widely to reduced peak to average power ratio (PAPR) for Multicarrier Modulation(MCM) System. In this paper, we Proposed new schemes based on the combination of Walsh-Hadamard Transform (WHT) Precoding with the companding technique based on the A-law and Mu-law technique to reduce PAPR for MIMO FBMC system with using Space Frequency Block Coding (STBC). Moreover, the Precoding Technique used in the frequency domain and nonlinear companding technique in the time domain. However, simulation results show that the combination of WHT precoding with A-law companding can achieve a better PAPR reduction and bit error rate(BER) performance compared to the combination of the WHT precoding with Mu companding technique.

Research paper thumbnail of Efficient PAPR Reduction Method for FBMC based Systems Using Isosceles Trapezoidal Distribution Transforms

RS Open Journal on Innovative Communication Technologies, 2022

Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) has been one of ... more Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) has been one of the key proposed candidate methods for fifth-generation wireless communication and beyond systems (5G) due to its many attractive properties and features related to spectral confinement. However, the applicability of the FBMC/OQAM modulation method is limited mainly by its high peak to average power ratio (PAPR), which can significantly reduce system efficiency. In this paper, a new technique based on the Isosceles Trapezoidal Distribution Transform (ITDT) is proposed to reduce the PAPR of FBMC/OQAM transceiver by transforming original Gaussian distributed FBMC signals into an Isosceles Trapezoidal, while maintaining a constant average output power level. The general formulas of the proposed scheme are derived and the trade-off between PAPR reduction and BER performance is accomplished by properly choosing variable parameters which are required for controlling the nonlinearity of the Companding function used in the proposed technique. The presented simulation results demonstrate that the proposed scheme can offer substantially better overall performance for FBMC based systems in terms of PAPR reduction, BER performance, and bandwidth efficiency compared to the other competitive methods.

Research paper thumbnail of Combined DHT Precoding and ALaw Companding for PAPR Reduction in FBMC / OQAM signals

The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is being stu... more The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is being studied by researchers as preferable waveforms support the fifth generation (5G) wireless communication. However, a non-constant envelope with high peaks is a main disadvantage of FBMC. The peak power of a signal is an analytical intention factor for communication systems and it is necessary to reduce it as much as possible. In this paper, hybrid schemes are investigated with the combination of the discrete Hartly transform (DHT) Precoding technique and A-Law companding technique to reduce PAPR in FBMC systems. The numerical results verify that the FBMC systems with all Precoding technique with using A-law companding can improve PAPR performance of the signals greatly with satisfying the performance of BER condition.

Research paper thumbnail of Complexity Analysis of FBMC/OQAM Transceiver using SRRC Polyphase Filter

2019 International Conference on Promising Electronic Technologies (ICPET), 2019

Nowadays, Filter Bank Multicarrier with used Offset Modulation system which known as FBMC/OQAM ha... more Nowadays, Filter Bank Multicarrier with used Offset Modulation system which known as FBMC/OQAM has been studying by many researchers at the different universities to support the requirement of the next wireless communication system which known as a fifth generation (5G) system. Moreover, FBMC/OQAM system used to provides a high data rate to the user with high bandwidth efficiency, and low impulse noise. In this paper, we design FBMC/OQAM transceiver based on the SRRC prototype filter, and then the performances of transceiver are evaluated. Moreover, our analytical model is further extended in order to analyse the complexity design of the FBMC / OQAM transceiver with used filters.

Research paper thumbnail of Modified Alternating Signal (AS) Scheme for Reducing PAPR of FBMC/OQAM Signal

2018 13th International Conference on Computer Engineering and Systems (ICCES), 2018

5th generation upcoming applications require an alternative multicarrier modulation (MCM) scheme ... more 5th generation upcoming applications require an alternative multicarrier modulation (MCM) scheme to support high data rate, high bandwidth efficiency, and low impulse noise. Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) system is the most suitable scheme to meet this requirement for next wireless communication system. However, as an MCM, the high Peak to Average Power Ratio (PAPR) is a significant problem from which the FBMC/OQAM suffers causing reduced power efficiency. In this paper, a modified alternative signal with sequential optimization(MAS-SO) algorithm is used for PAPR reduction. The traditional alternative signal (T-AS) algorithm is suggested to reduce the PAPR of the traditional multicarrier signal. However, it did not give a satisfactory PAPR reduction and so the algorithm has been modified to provide better PAPR reduction performance with low complexity.The simulation results from the complementary cumulative distribution function (CCDF) of PAPR show that the proposed scheme can achieve about 3.45 dB PAPR performance compared to existing T-AS scheme.

Research paper thumbnail of African Pentecostalism and World Christianity: Essays in Honor of J. Kwabena Asamoah-Gyadu, edited by Nimi Wariboko and Adeshina Afolayan

Research paper thumbnail of Design New Companding Scheme to Reduced PAPR for FBMC/OQAM in 5G Communication

2020 International Conference on Promising Electronic Technologies (ICPET), 2020

In last few years, there is an increased requirement in the demand for high data rates over the w... more In last few years, there is an increased requirement in the demand for high data rates over the wireless communication system. This demand motivated the researchers worldwide to move to higher generations of wireless communication systems characterized by high data rate, low drive motivation clamor, and high information move limit efficiency transmission. Therefore, Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) might be outstanding amongst other waveform utilized in the up and coming age of remote correspondence. But it is undergoing from a high peak to average power ratio. In this paper, we propose a new scheme called Weibull a nonlinear companding “WC” to reduce PAPR in the FBMC. This scheme is based on the transform of the originally Gaussian distributed FBMC signal magnitude into Weibull Distribution to effectively reduce the PAPR while preserving the BER performance. The reproduction results show that the proposed WC conspire viably lessen the PAPR by decreasing the pinnacle flags and developing the little signals, adequate BER execution

Research paper thumbnail of Absolute Exponential Companding to Reduced PAPR for FBMC/OQAM

2017 Palestinian International Conference on Information and Communication Technology (PICICT), 2017

Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) may be one of th... more Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) may be one of the best waveform used in the next generation wireless communication system (5G system). Moreover, The FBMC/OQAM system supports high data rate, low impulse noise and high bandwidth efficiency. However, Similar to Orthogonal frequency-division multiplexing OFDM system, the FBMC/OQAM system are the type of multicarrier modulation system (MCM) which suffers from high peak to average power ratio (PAPR) problem cases reduced power efficiency. In this paper, We propose a nonlinear companding scheme called 'Absolute Exponential Companding' (AEXC) to reduced PAPR in FBMC/OQAM system. However, the FBMC/OQAM system is employed with prototype filter bank using square root raised cosine (SRRC) filter. The simulation results show that, The proposed schemes highly effectively reduces the PAPR in the system by compressing the peak signals and expanding the small signals.

Research paper thumbnail of Design and Implementation of FBMC/OQAM Transceiver for 5G Wireless Communication System

2019 International Conference on Promising Electronic Technologies (ICPET), 2019

Recently, Many Multicarrier Communication Techniques (MCT) has been developed to support requirem... more Recently, Many Multicarrier Communication Techniques (MCT) has been developed to support requirements for next wireless communication, namely the fifth generation (5G) wireless communication. The Filter Bank Multicarrier /Offset Quadrature Amplitude Modulation (FBMC/OQAM) system is one of the proposed modulation schemes for the next wireless communication system because it provides high data rate and it has the benefit of very low side lobes leading to less inter-carrier interference (IC). The main goal of this research is to design and simulate the FBMC/OQAM transceiver physical layer with Square Root Raised Cosine Filter (SRRC) Prototype filter. The FBMC/OQAM transceiver system is built in VHDL for simulation and implementation on an FPGA. Moreover, the Physical layer will be illustrated along with a detailed simulation of the FBMC/OQAM system to study the effect of various design parameters. VHDL will be used for register-transfer level (RTL) description and FPGA synthesis tools will be used for performance analysis of the transceiver. Moreover, The RTL coding of VHDL will be used to provide a high-level design flow for developing and validating the transceiver system. The ISIM Xilinx edition will be used for functional simulation and verification. The performance of transceiver implementation was assessed through some parameters such as resource usage, power usage, latency, and throughput. It is found that the FBMC/OQAM transceiver has good resources usage and power consumption. Then, is possible to conclude that FBMC/OQAM system is a viable candidate waveform for 5G.

Research paper thumbnail of PAPR Reduction of FBMC/OQAM Systems Based on Combination of DST Precoding and A-law Nonlinear Companding Technique

2017 International Conference on Promising Electronic Technologies (ICPET), 2017

The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is considere... more The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is considered as a most efficient technique for next wireless communication systems 5G due to its higher spectral bandwidth efficiency, robustness to frequency-selective fading channels, etc. However, the biggest disadvantage to working with FBMC system is its high peak-to-average power ratio (PAPR) leads to severe intercarrier interference, out-of-band radiation, and poor bit error rate performance because of the nonlinearity of the high power amplifier. In this paper, we investigate a low complexity hybrid scheme using the combination of the Discrete Sine Transform (DST) Precoding technique and A Law Nonlinear companding technique to reduce PAPR in FBMC system. The numerical results verify that the FBMC systems with our proposed schemes can improve PAPR performance of the signals greatly with satisfying the performance of BER condition. It can reduced PAPR about 84% of original PAPR.

Research paper thumbnail of Performance evaluation of PAPR reduction in FBMC system using nonlinear companding transform

ICT Express, 2019

Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is one of the be... more Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) is one of the best waveforms used in 5G communications. The FBMC is a multicarrier modulation system (MCM) which suffers from high peak to average power ratio (PAPR) causing a reduction in power efficiency. Nonlinear companding techniques are widely used to reduce the peak-to-average-power ratio (PAPR). In this paper, we have evaluated the performance of different non-linear companding techniques to reduce the PAPR in FBMC/OQAM system while achieving good Bit Error rate. We assessed the hyperbolic tangent, the error function, the logarithmic function, the A-law, and Mu-law companding techniques. It is found that the best companding function is the Mu-law.

Research paper thumbnail of Proposed New Schemes to Reduce PAPR for STBC MIMO FBMC systems

Communications on Applied Electronics, 2017

Filter bank multicarrier (FBMC) system support better spectral efficiency and high data rate comp... more Filter bank multicarrier (FBMC) system support better spectral efficiency and high data rate compared to OFDM system. However, the capacity of FBMC system can be increased significantly by occupying Multiple Input and Multiple Output MIMO system. The combination of MIMO and FBMC system may be used for next communication system 5G to support high spectral efficiency. The major disadvantage of FBMC MIMO system are high peak to average power ratio (PAPR) which reduced the performance of the FBMC system .There are many reduction techniques have been used to reduce PAPR. However, The nonlinear companding technique and Precoding system used widely to reduced peak to average power ratio (PAPR) for Multicarrier Modulation(MCM) System. In this paper, we Proposed new schemes based on the combination of Walsh-Hadamard Transform (WHT) Precoding with the companding technique based on the A-law and Mu-law technique to reduce PAPR for MIMO FBMC system with using Space Frequency Block Coding (STBC). Moreover, the Precoding Technique used in the frequency domain and nonlinear companding technique in the time domain. However, simulation results show that the combination of WHT precoding with A-law companding can achieve a better PAPR reduction and bit error rate(BER) performance compared to the combination of the WHT precoding with Mu companding technique.

Research paper thumbnail of Capacity of FBMC/OQAM Transceiver System with SRRC Filter and Intrinsic Interference for 5G Wireless Communication System

2021 Palestinian International Conference on Information and Communication Technology (PICICT), 2021

Research paper thumbnail of Modified Square Rooting Companding Technique to Reduced PAPR for FBMC/OQAM

Multicarrier modulation (MCM) have become a fast developing area in wireless communication system... more Multicarrier modulation (MCM) have become a fast developing area in wireless communication system. The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) system may be the most popular multicarrier modulation technique used for next generation wireless communication technology 5G. It has several advantages such as supporting high data rate, low impulse noise and eliminating inter symbol interference (ISI), inter-carrier interference. However, the main challenging problems of FBMC/OQAM system is the high peak to average power ratio (PAPR). In this paper, we used Square Rooting Companding Technique (SQRT) to reduce the PAPR in the FBMC system, then we modified the SQRT scheme to new scheme which namely by Rooting Companding Technique (RCT). Moreover, new techniques are analyzed with CCDF characteristics and BER Performances. However, the simulation result shows the proposed RCT schemes given significant improvement in the PAPR reduction and increasing BER...

Research paper thumbnail of PAPR reduction for FBMC/OQAM using hybrid scheme of different Precoding transform and mu-law companding

International Journal of Engineering & Technology

The filter banks multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is developi... more The filter banks multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is developing multicarrier modulation technique used in the next wireless communication system (5G). FBMC/OQAM supports high data rate and high band width efficiency. However, one of the major drawbacks of FBMC system is high peak to Average Power Ratio (PAPR) of the transmitted signal, which causes serious degradation in performance of the system. Therefore, it is required to use a proper PAPR scheme at the transmitter to reduce the PAPR. In this paper, a hybrid scheme is investigated with the combination of preceding transform technique and Mu Law Companding technique to reduce PAPR in FBMC systems. Moreover, four preceding techniques are examined to find the best Precoding technique which can be used with Mu law commanding. We assessed the discrete Hartley transform (DHT). The discrete cosine transformed (DCT), the Discrete Sine Transform (DST), and the Walsh Hadamard transforms (WHT) which are ...

Research paper thumbnail of Combined DHT Precoding and A-Law Companding for PAPR Reduction in FBMC/OQAM signals

The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is being stu... more The filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) is being studied by researchers as preferable waveforms support the fifth generation (5G) wireless communication. However, a non-constant envelope with high peaks is a main disadvantage of FBMC. The peak power of a signal is an analytical intention factor for communication systems and it is necessary to reduce it as much as possible. In this paper, hybrid schemes are investigated with the combination of the discrete Hartly transform (DHT) Precoding technique and A-Law companding technique to reduce PAPR in FBMC systems. The numerical results verify that the FBMC systems with all Precoding technique with using A-law companding can improve PAPR performance of the signals greatly with satisfying the performance of BER condition.

Research paper thumbnail of Proposed New Schemes to Reduce PAPR for STBC MIMO FBMC systems

Filter bank multicarrier (FBMC) system support better spectral efficiency and high data rate comp... more Filter bank multicarrier (FBMC) system support better spectral efficiency and high data rate compared to OFDM system. However, the capacity of FBMC system can be increased significantly by occupying Multiple Input and Multiple Output MIMO system. The combination of MIMO and FBMC system may be used for next communication system 5G to support high spectral efficiency. The major disadvantage of FBMC MIMO system are high peak to average power ratio (PAPR) which reduced the performance of the FBMC system .There are many reduction techniques have been used to reduce PAPR. However, The nonlinear companding technique and Precoding system used widely to reduced peak to average power ratio (PAPR) for Multicarrier Modulation(MCM) System. In this paper, we Proposed new schemes based on the combination of Walsh-Hadamard Transform (WHT) Precoding with the companding technique based on the A-law and Mu-law technique to reduce PAPR for MIMO FBMC system with using Space Frequency Block Coding (STBC). Moreover, the Precoding Technique used in the frequency domain and nonlinear companding technique in the time domain. However, simulation results show that the combination of WHT precoding with A-law companding can achieve a better PAPR reduction and bit error rate(BER) performance compared to the combination of the WHT precoding with Mu companding technique.