Iterative multiuser detection for CDMA with FEC: near-single-user performance
Mark C. Reed, Christian B. Schlegel, Paul D. Alexander, J.A. Asenstorfer · IEEE Transactions on Communications · 1998
This paper introduces an iterative multiuser receiver for direct sequence code-division multiple access (DS-CDMA) with forward error control (FEC) coding. The receiver is derived from the maximum a posteriori (MAP) criterion for the joint received signal, but uses only single-user decoders. Iterations of the system are used to improve performance, with dramatic effects. Single-user turbo code decoders are utilized as the FEC system and a complexity study is presented. Simulation results show that the performance approaches single-user performance even for moderate signal-to-noise ratios.