Iterative multiuser detection for CDMA with FEC: near-single-userperformance |
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Authors: | Reed MC Schlegel CB Alexander PD Asenstorfer JA |
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Affiliation: | Technol. Unit, Ascom Systec AG, Maegenwil; |
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Abstract: | 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 |
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