Iterative Detection and Decoding for Multiuser MIMO Systems with Low Resolution Precoding and PSK Modulation

Erico S. P. Lopes, Lukas T. N. Landau

Low-resolution precoding techniques gained considerable attention in the wireless communications area recently. Unlike prior studies, the proposed work considers a coded transmission with an iterative detection and decoding process. Based on the assumption that the distortion brought by the discrete precoding is Gaussian distributed, different discrete precoding aware soft detectors are proposed. Numerical results based on PSK modulation and an LDPC block code indicate a superior performance as compared to the system design based on the common AWGN channel model in terms of bit-error-rate.

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