Simulation of Detection Performance for Four V-BLAST Receiver Types (ZF, ZF-SIC, MMSE, MMSE-SIC)

In this simulation study, we conduct performance evaluation experiments for four distinct V-BLAST receiver configurations: Zero Forcing (ZF), ZF with Successive Interference Cancellation (ZF-SIC), Minimum Mean Square Error (MMSE), and MMSE with SIC (MMSE-SIC). The implementation involves simulating multiple signal transmission scenarios across varying SNR conditions, where each receiver algorithm processes the received signals through specific detection matrices and cancellation techniques. For ZF receivers, we implement the pseudo-inverse channel matrix calculation, while MMSE receivers incorporate noise variance estimation in their weighting matrix computation. The SIC variants sequentially detect and cancel interfering signals using decision feedback mechanisms. We generate bit error rate versus signal-to-noise ratio curves to quantitatively analyze the performance relationships, enabling comprehensive comparison of interference cancellation capabilities, error propagation effects, and computational complexity trade-offs. These experiments provide critical insights for making informed decisions in communication system design and implementation, particularly regarding algorithm selection for MIMO systems under different channel conditions.