BER ANALYSIS OF MIMO-OFDM SYSTEM (original) (raw)
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MIMO is a system where a number of antennas are used at the transmitter and receiver side. A MIMO system takes advantage of the spatial diversity that is obtained by spatially separated antennas in a dense multipath scattering environment. The combination of OFDM systems with MIMO technology has provided us with increase in link reliability and an improvement in spectral efficiency. For 4G communication MIMO-OFDM is one of the most competitive technologies. The combination of OFDM and MIMO seems to be very promising when aiming at the design of very high-rate wireless mobile systems. This paper takes into consideration both these system and proposes a way for Ber-Analysis of the two system combined
BER Performance Analysis of MIMO-OFDM Over Wireless Channel
2018
In this paper we propose a method for multiple input and multiple output orthogonal space time block coded orthogonal frequency division multiplexing system. This system is design to achieve high data rate without increasing the bandwidth of the channel and simultaneously increase in capacity range along with reliability in wireless communication system. Proposed method is used to maintain the orthogonality of wireless channel in MIMO-OFDM system with two transmit and arbitrary number of receive antennas. Orthogonality is most essential, so that the channels may remain un correlated, due to this condition, interference do not occurs between the data transmitted through wireless channel and also at receiver end ML and MMSE equalizer are used thus achieved performance improvement is compared .Which is evaluated through simulation.
BER Analysis of MIMO OFDM System for AWGN & Rayleigh Fading Channel
2013
Orthogonal Frequency-Division Multiplexing (OFDM) is essentially identical to coded OFDM (COFDM) and discrete multi-tone modulation (DMT). It is a frequency-division multiplexing (FDM) scheme, which is used as a digital multicarrier modulation method. The paper is aimed at analyzing the BER performance of the MIMO (Multi-Input Multi-Output) OFDM system for AWGN (Additive White Gaussian Noise) Channel, Rayleigh Fading Channel along with a simulation channel using different modulation technique. Also the result of the analysis suggest for the better technique in order to improve the BER characteristic of the MIMO-OFDM system.
BER Analysis of MIMO-OFDM System Using NAKAGAMI-M Distribution
With the evolution of the wireless system, the demand for high speed data services have been increasing day by day, which is impossible to be achieved by the conventional serial data transmission system, without trade-off between high speed data services and increasing the bandwidth of the system. Here, both the options are inconvenient, as one never demands the degradation of the service quality (because if we increase data rate in serial data transmission ISI will gradually increase which make the extraction of actual information at receiver nearly impossible) and secondly the need for extra spectrum in a limited spectrum scenario. In order to overcome this problem new parallel data transmission system was proposed, which is known as OFDM system. This study gives a summary of the basics of MIMO-OFDM technology and focuses on the BER Analysis of MIMO-OFDM systems. The signal detection technology used in present work work for MIMO-OFDM system is Nakagami Distribution. In the study, the analysis of high level of modulations on MIMO-OFDM system is obtainable. The grouping of OFDM systems with MIMO technology has delivered us with increase in link reliability as well as an improvement in spectral competence.
SNR and BER Analysis for Multiple Antenna System Using OFDM
Initially communication was carried out using analogue signal. Due to its various drawbacks, digital communication was introduced which has so many advantages over analogue communication and soon become very popular. Due to its low cost and easily reachable properties, wireless communication has become popular in communication.In the current scenario of modern wireless communication system, multiple input multiple output (MIMO) technique has emerged as one of the most efficient and significant method. This paper presents an analysis of MIMO system that has been introduced in the wireless communication to increase the diversity and to mitigate the effect of the channel fading phenomenon. In order to provide the transmit diversity, Space Time Block Code (STBC) is used in the Multiple input multiple output system. Effort has been made for deriving the Signal to noise ratio (SNR) and Bit error rate (BER) for different combination of the MIMO wireless communication system. SNR and BER have been computed for different combination of transmit antenna. The results of the simulation suggest that the performance of the MIMO system can be improved by increasing the diversity gain.
Wireless communication systems need tremendously high data rates and high transmission reliability in order to meet the hastily increasing demand for multimedia applications such as high quality audio and video. OFDM is a widespread and one of the most promising modulation techniques. Recently, there has been a lot of interest to use OFDM in combination with a MIMO transceiver system, named MIMO OFDM system which is used to increase the diversity gain and system capacity. The BER performance of the MIMO-OFDM for various modulation techniques i.e., BPSK, QPSK, 16-PSK,8-PSK ,64-PSK and QAM using AWGN (Additive White Gaussian Noise) and Rayleigh channel is evaluated. The receiver diversity technique used is Maximum ratio receiver combining technique (MRRC). By multicarrier modulation , we can achieve advantages like high data rate, higher reliability, inter symbol interference (ISI) reduction, and better performance in multipath fading.
MIMO-OFDM's BER and Design Performance for Wireless Broadband Communications
To get high data rates, speed and immediate amplify in range and reliability without consuming more radio frequency require MIMO-OFDM for wireless broadband communication. In this paper, we investigate the performance of MIMO-OFDM using diverse modulation schemes are used to encode and decode the data stream in wireless communication over AWGN channel for the indefinite transmitter and known receiver. In exacting we relate MIMO detection methods based on V-BLAST (Vertical Bells Lab Layered Space Time) planning to develop spectral efficiency. Shuja Behna | Neetu Sikarwar"MIMO-OFDM's BER and Design Performance for Wireless Broadband Communications" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: http://www.ijtsrd.com/papers/ijtsrd10768.pdf
BER Analysis of BPSK based MIMO & MIMO-OFDM system
2013
This paper focuses on BER analysis of BPSK based MIMO & MIMO-OFDM system. Nowadays, there is a requirement of higher data rate for wireless communication systems. In this paper we are going to compare MIMO & MIMO-OFDM system & how MIMO-OFDM is used to overcome high data rate problem is shown. MIMO is a multiple antenna technology. MIMO systems employ multiple antennas at both the transmitter & receiver to improve the range & performance of communication system. OFDM is a category of multicarrier modulation technique. In OFDM sub-carrier frequencies are orthogonal to each other i.e. they cannot interfere with each other (cross-talk between the sub-channels is eliminated). For transmission of signals over wireless channels OFDM is a very popular modulation technique. To reduce inter symbol interference (ISI) & to enhance system capacity OFDM for MIMO channels is considered. MIMO & MIMO-OFDM module is carried out through Matlab simulation.
IJERT-Modeling and Analyzing the BER Performance of MIMO System using Different Modulation Technique
International Journal of Engineering Research and Technology (IJERT), 2015
https://www.ijert.org/modeling-and-analyzing-the-ber-performance-of-mimo-system-using-different-modulation-technique https://www.ijert.org/research/modeling-and-analyzing-the-ber-performance-of-mimo-system-using-different-modulation-technique-IJERTV4IS050585.pdf MIMO technology is a radio communication technology which uses multiple antennas at both transmitter and receiver side to make use of reflected signals that provides gain in channel robustness and increases throughput. The demand of MIMO system is increasing day by day due to its capability of robustness against multipath fading. In this paper we mainly focus on modeling of MIMO systems and analysis of system using different modulation techniques such as BPSK, QPSK, 16 QAM, 64 QAM and BER is determined for all the systems. Performances of system have been observed for various parameters and channel conditions using customizable channel. And finally the comparison of BER for all the system is determined.