Switching Between OSTBC and Spatial Multiplexing with Linear Receivers in Spatially Correlated MIMO Channels
作者： A. Forenza , M.R. McKayt , I.B. Collings , R.W. Heath
DOI: 10.1109/VETECS.2006.1683062
关键词: Topology 、 Adaptive algorithm 、 Spatial multiplexing 、 Upper and lower bounds 、 Block code 、 Spectral efficiency 、 Spatial correlation 、 Electronic engineering 、 Transmission (telecommunications) 、 Mathematics 、 Multiplexing
摘要: We present a low complexity adaptive transmission approach for spatially correlated MIMO channels. The proposed scheme adaptively switches between orthogonal space-time block codes (OSTBC) and spatial multiplexing (SM), depending of the channel correlation SNR. derive an exact closed-form expression tight upper bound on OSTBC capacity in double-correlated channels, examine relative SM terms correlation. then efficient BER expressions practical employing bit-interleaved coded modulation (BICM). Based these results, we propose algorithm which selects combination (OSTBC or SM), BICM mode, achieves highest spectral efficiency whilst satisfying pre-defined BER.
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