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In this paper, we investigate the low density parity-check (LDPC) decoding algorithms and the detection methods of the multiple-input multiple-output (MIMO) systems. For LDPC codes, min-sum and layered decoding algorithms are discussed, and for MIMO detection, the maximum likelihood (ML) decision based on the sphere decoding algorithm is mainly analyzed. Also, the performance of the combination of...
We present a reduced-complexity soft detection (RCSD) scheme geared to multiple-input multiple-output (MIMO) systems with spatial domain multiplexing leading to layered space-time or space-frequency architecture. The proposed algorithm relies on a trellis representation of the MIMO signals and a subsequent formulation of constrained-depth maximum a posterior (MAP) detection in conjunction with soft...
For space-time bit-interleaved coded modulation (ST-BICM) systems, applying a turbo-reception between the space-time (ST) detector and the error-correcting decoder leads to the best performance. However, this receiving technique requires the computation of high quality log-likelihood ratios (LLR). The computation complexity of optimal a posteriori probabilities (APP) by the ST detector is exponential...
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