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Nested Maximum Likelihood Group Detection in Generalized Spatial Modulation MIMO Systems
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DOI：10.1109/LCOMM.2014.2323252.png)
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Abstract
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This letter presents a new detection scheme for the generalized spatial modulation MIMO system. The strategy is based on the successive use of maximum likelihood detectors, applied in a nested fashion, to variable-length partitions of the post-equalization received signal. The choice of the antenna combination mapping, named spatial constellation, as well as the detection ordering strategy are key design factors to the implementation of the high-performance and low-complexity detector. Simulation results show the substantial performance advantage of the proposed detector compared with current suboptimal receivers.
Keywords:
Multiple-input multiple output (MIMO) systems
generalized spatial modulation (GSM)
group detection
detection ordering
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