Abstract:

An iterative multi-user detection receiver structure is proposed for multiple input multiple output interleave division multiple access (MIMO-IDMA) systems. Different chip-level interleaving signatures distinguish users. A novel mean-based soft decision multi-user detection (SoD) algorithm is applied in multi-user detector. Simulation results show that the proposed SoD detection scheme improves the performance in SNR around 2dB compared to MMSE, 1dB superior to SoIC, and has lower bit error rate and complexity.

Key words: multiple input multiple output ；interleave division multiple access, iterative multi-user detection