We consider a multiuser multiple-input multiple-output (MU-MIMO) system that uses orthogonal frequency division multiplexing (OFDM). Several receivers are developed for data detection of MU-MIMO transmissions where two users share the same OFDM time and frequency resources. The receivers have partial state information about the MU-MIMO transmission with… (More)
— The problem of soft information optimization for memoryless relay networks is motivated and studied through AF relay networks, and in particular the AF relay multiple access (MAC) and broadcast (BC) channels. Relay optimization, capacity region characterization and optimal scheduling are addressed.