On the influence of uncertainties in MIMO decoding algorithms

With the introduction of multiple antennas at transmitter and receiver, new challenging problems have occurred. Many MIMO decoding algorithms have been proposed in the literature. However, many assumptions are too simplifying and obtained results based on oversimplified simulations showed too optimistic receiver performances. This paper treats the uncertainties that a receiver designer has to deal with: unknown noise level, channel estimation errors, different channel qualities, and presents receiver performances with respect to such uncertainties. Furthermore, few details in the ordering process of iterative MIMO decoding schemes are discussed.