EM-Based Receiver Design for Uplink MIMO-OFDMA Systems

M. Wang, G. C. Goodwin, D. E. Quevedo
2008 2008 IEEE International Conference on Communications  
In this paper we propose an iterative receiver for uplink MIMO-OFDMA systems based on the expectation maximization (EM) algorithm. Iterating between the E-step and the M-step, the EM-based receiver updates the channel estimates and, refines data detection by increasing the likelihood function. Practical implementation issues are also considered: space-time block-coding (STBC) is incorporated to improve system performance against fading; a reduced-complexity algorithm is proposed, which
more » ... s the computation whilst not compromising performance.
doi:10.1109/icc.2008.847 dblp:conf/icc/WangGM08 fatcat:g4v6xowgmbe5jfhx2lsffawmlq