Sattar Mirzakuchaki | Iran University of Science & Technology (original) (raw)
Papers by Sattar Mirzakuchaki
Wireless Personal Communications, 2019
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Microelectronics Journal, 2018
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IEEE Transactions on Instrumentation and Measurement, 2016
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Computers & Electrical Engineering, 2016
In this paper, an efficient implementation of high throughput Digital Video Broadcasting (DVB) sy... more In this paper, an efficient implementation of high throughput Digital Video Broadcasting (DVB) system based on the Orthogonal Frequency Division Multiplexing (OFDM) modulation for terrestrial links is proposed. The proposed architecture uses an improved optimization methods to obtain high speed system. To verify the efficiency of this system a DVB-T simulator in MATLAB matched with European Telecommunications Standards Institute (ETSI) is used to investigate the hardware design performance. The joint simulation of Xilinx ISE and MATLAB was performed including information framing, channel coding, and modulation. Also, a systematic design procedure based on FPGA for the proposed DVB-T system is presented and the results are reported. Hardware implementation results demonstrate the effectiveness of the proposed system and show that there is a good match between fixed-point implementations and floating-point simulations, while the high-throughput architecture is achieved in hardware implementation using the speed optimization methods in the design.
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International Mathematical Forum, 2007
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Due to the increasing demand for small, low-cost, high-resolution radars, frequency-modulated con... more Due to the increasing demand for small, low-cost, high-resolution radars, frequency-modulated continuous wave (FMCW) radars are gaining more and more attraction. One major challenge with the digital signal processing (DSP) employed in FMCW radars is reducing the number of required computations in order to achieve a real-time operation. Most FMCW radars need to continuously perform the Fast Fourier Transform (FFT) to determine the object range, velocity, etc. This computational burden is a major obstacle to the radar real-time operation. In this letter, a computationally efficient FMCW radar is proposed capable of reducing the number of required FFT operations without sacrificing the resolution of the estimated range. With careful selection of parameters, simulations show that the new method can reduce the number of required FFT operations by a factor of about 119 and 183 in two different scenarios when compared to a conventional solution.
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Journal of Computational Electronics, 2017
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International Journal of Communication Systems, 2016
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Microelectronics Journal, 2020
Abstract In the realm of VLSI circuits, addition and multiplication are the most pivotal operator... more Abstract In the realm of VLSI circuits, addition and multiplication are the most pivotal operators in arithmetic units. In this regard, this work aims to propose an energy efficient 4:2 precise compressor utilizing 10 nm wrap gate CNTFET technology. The proposed compressor is constructed from 2 hybrids 14-transistors full adders. The proposed Gate All Around (GAA) CNTFET based full adder employs a hybrid XOR/XNOR logic structure to lower the transistor count and power consumption. After performing rigorous simulations, we have demonstrated that the proposed GAA CNTFET based full adder and 4:2 compressor depict 175.3 nW and 308.5 nW power consumption respectively along with superior propagation delay response (4.4 ps and 10.57 ps respectively) at a 0.5 V nominal supply voltage. Moreover, the proposed designs occupy a lower layout area (0.195 μm2 and 0.43 μm2 for the proposed full adder and 4:2 compressor respectively) compared to the other counterparts. Our results accentuate the application of the proposed GAA CNTFET based 4:2 precise compressor for ultra miniature microprocessing systems.
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IET Communications, 2016
Synchronisers are a significant part of digital communication receivers since they are used to es... more Synchronisers are a significant part of digital communication receivers since they are used to estimate the received signal timing. Among these synchronisers, non-data-aided (NDA) or blind synchronisers are even more important due to bandwidth efficiency. In this study, a different approach is investigated to derive new feedforward NDA timing estimators based on Newton algorithm. Two novel estimators with four and two samples per symbol are presented and compared with traditional timing estimators, respectively. One of the main advantages of the second proposed estimator is the ability to control the loop gain automatically. This ability improves the convergence speed and robustness of the design. Simulation results show that the presented estimators outperform the conventional estimators over a noisy channel, especially at small excess bandwidth and low signal to noise ratio.
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cyberjournals.com
AbstractIn this paper, we propose a computational analogue block which can be used to realize fu... more AbstractIn this paper, we propose a computational analogue block which can be used to realize functions such as squaring, harmonic mean calculation, and vector summing. As presented block can be programmed to realize mentioned functions, it can be efficiently ...
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In this study a method has been introduced to map the features extracted from the recorded electr... more In this study a method has been introduced to map the features extracted from the recorded electromyogram signals from the forearm and the force generated by the fingers. In order to simultaneously record of sEMG signals and the force produced by fingers, 9 requested movements of fingers conducted by 10 healthy people. Estimation was done for 6 degrees of freedom (DoF) and generalized regression neural network (GRNN) was selected for system training. The optimal parameters, including the length of the time windows, the parameters of the neural network, and the characteristics of the sEMG signal were calculated to improve the performance of the estimate. The performance was obtained based on R criterion. The Total value of R for 6 DoF was 92.8±5.2% that obtained by greedy looking system parameters in all the subjects. The result shows that proposed method can be significant in simultaneous myoelectric control.
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SN Applied Sciences, 2020
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Optik - International Journal for Light and Electron Optics, 2017
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2016 24th Iranian Conference on Electrical Engineering (ICEE), 2016
In this paper a novel image encryption algorithm based on discrete wavelet transform (DWT) is pro... more In this paper a novel image encryption algorithm based on discrete wavelet transform (DWT) is proposed which uses two-dimensional logistic map as Private-Key. The algorithm uses Haar wavelet transform in order to generate image sub-bands which are used in encryption and decryption process and then two-dimensional logistic map is applied to the encrypted image in order to generate chaotic matrix which causes the encrypted image to be more secure. This chaotic matrix can also be used as a private-key in decryption process. The reversible proposed algorithm is evaluated with standard images and statistical techniques. The results show proposed algorithm possesses higher security and performance compared to the previous works.
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IET Image Processing, 2016
Detection of dim small targets in infrared (IR) images with high reliability is very important in... more Detection of dim small targets in infrared (IR) images with high reliability is very important in defence systems. In this study, a new method is introduced based on human visual system and saliency maps fusion to detect the small target in IR images with high reliability. By using the static and motion saliency maps fusion, emphasizing the obtained saliencies from one method to another and applying the information and benefits of all maps in the saliency map fusion, this method suppresses the background clutter and noise with high reliability, makes the target more prominent and finally increases the contrast among them. The experiments are carried out on some real-life data of IR images containing the moving target. The obtained results show the efficiency and robustness of the proposed method so that this method improves the target signal to the background noise and clutter and increases the contrast between them and also detects the small target in IR images with low false alarm rates and high reliability.
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2007 2nd International Workshop on Soft Computing Applications, 2007
Abstract Power line carrier communication presents new area for automatic meter reading, by equip... more Abstract Power line carrier communication presents new area for automatic meter reading, by equipped energy meter with power line system all user connect each other with this communication method, Smart metering uses all potential of this communication channel ...
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IEEE EUROCON 2009, 2009
... Applying intelligent current balancing technique in smart meters enhances grid balancing base... more ... Applying intelligent current balancing technique in smart meters enhances grid balancing based on statistical information of low voltage network that each smart meter gathers periodically. Index Terms: Smart meter, Power line Carrier, Three Phase balancing. ...
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Signal Processing, 2012
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Wireless Personal Communications, 2019
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Microelectronics Journal, 2018
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IEEE Transactions on Instrumentation and Measurement, 2016
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Computers & Electrical Engineering, 2016
In this paper, an efficient implementation of high throughput Digital Video Broadcasting (DVB) sy... more In this paper, an efficient implementation of high throughput Digital Video Broadcasting (DVB) system based on the Orthogonal Frequency Division Multiplexing (OFDM) modulation for terrestrial links is proposed. The proposed architecture uses an improved optimization methods to obtain high speed system. To verify the efficiency of this system a DVB-T simulator in MATLAB matched with European Telecommunications Standards Institute (ETSI) is used to investigate the hardware design performance. The joint simulation of Xilinx ISE and MATLAB was performed including information framing, channel coding, and modulation. Also, a systematic design procedure based on FPGA for the proposed DVB-T system is presented and the results are reported. Hardware implementation results demonstrate the effectiveness of the proposed system and show that there is a good match between fixed-point implementations and floating-point simulations, while the high-throughput architecture is achieved in hardware implementation using the speed optimization methods in the design.
Bookmarks Related papers MentionsView impact
International Mathematical Forum, 2007
Bookmarks Related papers MentionsView impact
Due to the increasing demand for small, low-cost, high-resolution radars, frequency-modulated con... more Due to the increasing demand for small, low-cost, high-resolution radars, frequency-modulated continuous wave (FMCW) radars are gaining more and more attraction. One major challenge with the digital signal processing (DSP) employed in FMCW radars is reducing the number of required computations in order to achieve a real-time operation. Most FMCW radars need to continuously perform the Fast Fourier Transform (FFT) to determine the object range, velocity, etc. This computational burden is a major obstacle to the radar real-time operation. In this letter, a computationally efficient FMCW radar is proposed capable of reducing the number of required FFT operations without sacrificing the resolution of the estimated range. With careful selection of parameters, simulations show that the new method can reduce the number of required FFT operations by a factor of about 119 and 183 in two different scenarios when compared to a conventional solution.
Bookmarks Related papers MentionsView impact
Journal of Computational Electronics, 2017
Bookmarks Related papers MentionsView impact
International Journal of Communication Systems, 2016
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Microelectronics Journal, 2020
Abstract In the realm of VLSI circuits, addition and multiplication are the most pivotal operator... more Abstract In the realm of VLSI circuits, addition and multiplication are the most pivotal operators in arithmetic units. In this regard, this work aims to propose an energy efficient 4:2 precise compressor utilizing 10 nm wrap gate CNTFET technology. The proposed compressor is constructed from 2 hybrids 14-transistors full adders. The proposed Gate All Around (GAA) CNTFET based full adder employs a hybrid XOR/XNOR logic structure to lower the transistor count and power consumption. After performing rigorous simulations, we have demonstrated that the proposed GAA CNTFET based full adder and 4:2 compressor depict 175.3 nW and 308.5 nW power consumption respectively along with superior propagation delay response (4.4 ps and 10.57 ps respectively) at a 0.5 V nominal supply voltage. Moreover, the proposed designs occupy a lower layout area (0.195 μm2 and 0.43 μm2 for the proposed full adder and 4:2 compressor respectively) compared to the other counterparts. Our results accentuate the application of the proposed GAA CNTFET based 4:2 precise compressor for ultra miniature microprocessing systems.
Bookmarks Related papers MentionsView impact
IET Communications, 2016
Synchronisers are a significant part of digital communication receivers since they are used to es... more Synchronisers are a significant part of digital communication receivers since they are used to estimate the received signal timing. Among these synchronisers, non-data-aided (NDA) or blind synchronisers are even more important due to bandwidth efficiency. In this study, a different approach is investigated to derive new feedforward NDA timing estimators based on Newton algorithm. Two novel estimators with four and two samples per symbol are presented and compared with traditional timing estimators, respectively. One of the main advantages of the second proposed estimator is the ability to control the loop gain automatically. This ability improves the convergence speed and robustness of the design. Simulation results show that the presented estimators outperform the conventional estimators over a noisy channel, especially at small excess bandwidth and low signal to noise ratio.
Bookmarks Related papers MentionsView impact
cyberjournals.com
AbstractIn this paper, we propose a computational analogue block which can be used to realize fu... more AbstractIn this paper, we propose a computational analogue block which can be used to realize functions such as squaring, harmonic mean calculation, and vector summing. As presented block can be programmed to realize mentioned functions, it can be efficiently ...
Bookmarks Related papers MentionsView impact
In this study a method has been introduced to map the features extracted from the recorded electr... more In this study a method has been introduced to map the features extracted from the recorded electromyogram signals from the forearm and the force generated by the fingers. In order to simultaneously record of sEMG signals and the force produced by fingers, 9 requested movements of fingers conducted by 10 healthy people. Estimation was done for 6 degrees of freedom (DoF) and generalized regression neural network (GRNN) was selected for system training. The optimal parameters, including the length of the time windows, the parameters of the neural network, and the characteristics of the sEMG signal were calculated to improve the performance of the estimate. The performance was obtained based on R criterion. The Total value of R for 6 DoF was 92.8±5.2% that obtained by greedy looking system parameters in all the subjects. The result shows that proposed method can be significant in simultaneous myoelectric control.
Bookmarks Related papers MentionsView impact
SN Applied Sciences, 2020
Bookmarks Related papers MentionsView impact
Optik - International Journal for Light and Electron Optics, 2017
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2016 24th Iranian Conference on Electrical Engineering (ICEE), 2016
In this paper a novel image encryption algorithm based on discrete wavelet transform (DWT) is pro... more In this paper a novel image encryption algorithm based on discrete wavelet transform (DWT) is proposed which uses two-dimensional logistic map as Private-Key. The algorithm uses Haar wavelet transform in order to generate image sub-bands which are used in encryption and decryption process and then two-dimensional logistic map is applied to the encrypted image in order to generate chaotic matrix which causes the encrypted image to be more secure. This chaotic matrix can also be used as a private-key in decryption process. The reversible proposed algorithm is evaluated with standard images and statistical techniques. The results show proposed algorithm possesses higher security and performance compared to the previous works.
Bookmarks Related papers MentionsView impact
IET Image Processing, 2016
Detection of dim small targets in infrared (IR) images with high reliability is very important in... more Detection of dim small targets in infrared (IR) images with high reliability is very important in defence systems. In this study, a new method is introduced based on human visual system and saliency maps fusion to detect the small target in IR images with high reliability. By using the static and motion saliency maps fusion, emphasizing the obtained saliencies from one method to another and applying the information and benefits of all maps in the saliency map fusion, this method suppresses the background clutter and noise with high reliability, makes the target more prominent and finally increases the contrast among them. The experiments are carried out on some real-life data of IR images containing the moving target. The obtained results show the efficiency and robustness of the proposed method so that this method improves the target signal to the background noise and clutter and increases the contrast between them and also detects the small target in IR images with low false alarm rates and high reliability.
Bookmarks Related papers MentionsView impact
2007 2nd International Workshop on Soft Computing Applications, 2007
Abstract Power line carrier communication presents new area for automatic meter reading, by equip... more Abstract Power line carrier communication presents new area for automatic meter reading, by equipped energy meter with power line system all user connect each other with this communication method, Smart metering uses all potential of this communication channel ...
Bookmarks Related papers MentionsView impact
IEEE EUROCON 2009, 2009
... Applying intelligent current balancing technique in smart meters enhances grid balancing base... more ... Applying intelligent current balancing technique in smart meters enhances grid balancing based on statistical information of low voltage network that each smart meter gathers periodically. Index Terms: Smart meter, Power line Carrier, Three Phase balancing. ...
Bookmarks Related papers MentionsView impact
Signal Processing, 2012
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