Journal of Electronic Systems Józef Pawelec, Krzysztof Kosmowski 2 2 2012 http://www.dline.info/jes/fulltext/v2n2/1.pdf The closed-form simple expressions for the bit error rate (BER) in multiple input – multiple output (MIMO) systems operating under flat and quasi-static Rayleigh fading have been derived on the basis of positional statistics. Next, this approach has been extended on the dynamic and crosscorrelated scenarios. The agreement between analysis and simulation results is good.