Uplink Performance Enhancement for MU-MIMO Wireless Systems with STBC and Regularized ZF Equalization
DOI:
https://doi.org/10.65568/gujes.2026.020121الكلمات المفتاحية:
STBC، ZF، MU-MIMOالملخص
This paper presents a robust performance study of uplink Multi-User Multiple-Input Multiple-Output (MU-MIMO) wireless communication system with Space-Time Block Coding (STBC) under Rayleigh fading. The model adopts QPSK modulation and numerically stable Zero-Forcing (ZF) equalizer with regularization to cancel inter-user interference and for better numerical stability. The system is analysed using both BER, user and antenna connection capacity. MATLAB simulations
demonstrate that increasing the number of receive antennas significantly improves both BER and capacity. Moreover, the proposed regularized (ZF) detection method outperforms conventional approaches, offering improved robustness and reduced complexity. This study showed the effectiveness of the proposed solution and performance of next generation wireless networks through comparative analysis with other prior MU-MIMO schemes.
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