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http://dx.doi.org/10.17661/jkiiect.2019.12.6.636

Analysis of Communication Performance According to Detection Sequence of MMSE Soft Decision Interference Cancellation Scheme for MIMO System  

Lee, Hee-Kwon (Department of Information and Communication Engineering, Korea Wonkwang University)
Kim, Deok-Chan (Department of Electrnic Engineering, Korea Wonkwang University)
Kim, Tae-Hyeong (Department of IT Applied System Engineering, Korea Jeonbuk National University)
Kim, Yong-Kab (Department of Information and Communication Engineering, Korea Wonkwang University)
Publication Information
The Journal of Korea Institute of Information, Electronics, and Communication Technology / v.12, no.6, 2019 , pp. 636-642 More about this Journal
Abstract
In this paper, we analyzed BER (Bit Error Rate) communication performance according to the detection order of MMSE (Minimum Mean Square Error) based soft decision interference cancellation. As the detection order method, antenna index order method, absolute value magnitude order method of channel elements, absolute value sum order method of channel elements, and SNR (Signal Noise Ratio) order method are proposed. BER performance for the scheme was measured and analyzed. As a simulation environment, 16-QAM (Quadrature Amplitude Modulation) modulation is used in an uncoded environment of an M×M multiple-input multiple-output system, and an independent Rayleigh attenuation channel is considered. The simulation results show that the performance gain is about 1.5dB when the SNR-based detection order method is M=4, and the performance gain is about 3.5dB when M=8 and about 3.5dB when M=16. The more BER performance was confirmed, the more the detection order method of the received signal prevented the interference and error spreading occurring in the detection process.
Keywords
MIMO; MMSE; Soft Decision; Detection Sequence; IC; BER;
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Times Cited By KSCI : 2  (Citation Analysis)
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