Performance Evaluation of MIMO Spatial Multiplexing Detection Techniques

Multiple Input Multiple Output (MIMO) multiplexing is a promising technology that can greatly increase the channel capacity without additional spectral resources. The challenge is to design detection algorithms that can recover transmitted signals with acceptable complexity and high performance. In this paper, several MIMO Spatial Multiplexing (SM) detection techniques are introduced and evaluated in terms of BER. Different aspects have been considered and discussed in this evaluation such as; signal to noise ratio, number of transmit and receive antennas. The performance comparisons and graphs have been generated using an optimized simulator. This simulator has been developed using MATLAB®.

Key words: MIMO, spatial multiplexing, maximum-likelihood detection, linear detection, tree search.