Error rate analysis of the V-BLAST MIMO channels using interference cancellation detectors

Multiple Input Multiple Output (MIMO) systems have recently emerged as a key technology in wireless communication systems for increasing both data rates and system performance. The Vertical Bell Labs Space-Time Architecture (V-BLAST) is one of the schemes, which can be applied to MIMO wireless system. This paper proposes signal detectors for V-BLAST architecture with Maximum Likelihood (ML), ZeroForcing (ZF), Minimum Mean-Square Error (MMSE), and Successive Interference Cancellation (SIC) detectors and simulates these structures in Rayleigh fading channel. The proposed analysis also compares the performances of MIMO system with different modulation techniques like BPSK and QPSK in Fading and AWCN channels. Based on bit error rates, we analyse the performance and the computational complexity of these schemes.