Low complexity adaptation of MIMO MMSE receivers, implementation aspects

In this paper we propose two algorithms for adaptation of linear and successive interference cancellation (SIC) MIMO receivers based on the MMSE criterion. The algorithms are compared to the so-called fast V-BLAST algorithm in terms of implementation simplicity and the required number of arithmetic operation. We conclude that both proposed algorithm offer advantages over the algorithm fast V-BLAST. When compared to the latter, the first proposed algorithm has much simpler implementation but the same arithmetic complexity, while the second proposed algorithm lowers by 33% the required number of arithmetic operations