Bit Error Rate (BER) Performance of MIMO Systems in M-QAM with Nonlinear Effect
Ahmed E. Zakzouk1, Ragab M. Elbakar2, and Mohamed I. Yousef3
1Ahmed E. Zakzouk,Electrical Engineering Department, Collage of Engineering, Al-Azhar University, Cairo, Egypt.
2Ragab M. Elbakar, Electrical Engineering Department, Collage of Engineering, Al-Azhar University, Cairo, Egypt.
3MohamedI. Yousef, dElectrical Engineering Department, Collage of Engineering, Al-Azhar University, Cairo, Egypt.
Manuscript received on November 25, 2019. | Revised Manuscript received on December 08, 2019. | Manuscript published on December 30, 2019. | PP: 265-267 | Volume-9 Issue-2, December, 2019. | Retrieval Number: B2642129219/2019©BEIESP | DOI: 10.35940/ijeat.B2642.129219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Out object in this paper it to study, the effect of nonlinearity on the bit error rate (BER) of MIMO systems in M-QAM modulation techniques. We consider Saleh’s model (power amplifier model) for the nonlinearity, and apply the nonlinear model on MIMO system with receiver diversity and transmitter diversity. For transmitter diversity, the Space-Time Block Coding (STBC) based on Alamouti scheme is used to provide transmits diversity for two transmitting antennas. The results show that, if there is a high variation in the amplitude of the M- QAM symbols, there will behigh effect of nonlinearity that causes high BER especially for high amplitude symbols at high SNR.
Keywords: Bit Error Rate, MIMO systems, Nonlinear Effect, Space-Time Block Coding.