Cássio B. Ribeiro Esa Ollila Visa Koivunen Stochastic Maximum-Likelihood Method for MIMO Propagation Parameter Estimation. 46-55 2007 55 IEEE Transactions on Signal Processing 1 http://doi.ieeecomputersociety.org/10.1109/TSP.2006.882057 db/journals/tsp/tsp55.html#RibeiroOK07