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Quadrature Spatial Modulation
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DOI：10.1109/TVT.2014.2344036.png)
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摘要
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This paper proposes a new multiple-input-multiple-output (MIMO) technique called quadrature spatial modulation (QSM). QSM enhances the overall throughput of conventional SM systems by using an extra modulation spatial dimension. The current SM technique uses only the real part of the SM constellation, and the proposed method in this paper extends this to in-phase and quadrature dimensions. It is shown that significant performance enhancements can be achieved at the expense of synchronizing the transmit antennas. Additionally, a closed-form expression for the pairwise error probability (PEP) of generic QSM system is derived and used to calculate a tight upper bound of the average bit error probability (ABEP) over Rayleigh fading channels. Moreover, a simple and general asymptotic expression is derived and analyzed. Obtained Monte Carlo simulation results corroborate the accuracy of the conducted analysis and show the significant enhancements of the proposed QSM scheme.
Keyword:
Average bit error probability (ABEP)
high spectral efficiency
multiple-input-multiple-output (MIMO)
performance analysis
quadrature spatial modulation (QSM)
spatial modulation (SM)
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期刊
IF:
7.1
论文数:
1.8W
被引数:
6.6W
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