Journal
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume 11, Issue 4, Pages 1605-1615Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2012.030512.111635
Keywords
Spatial modulation(SM); vertical-Bell lab layered space-time (V-BLAST); maximum likelihood (ML) detection; multiple-input multiple-output (MIMO) systems
Funding
- Ph.D. Program Foundation from Ministry of Education of China [20090002120026]
- Tsinghua University [2010THZ0]
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A generalised spatial modulation (SM) scheme with multiple active transmit antennas, named as multiple active-spatial modulation (MA-SM), is proposed in this paper. By allowing multiple transmitting antennas in the SM system to transmit different symbols at the same time instant, MA-SM takes advantages of the low complexity of SM and high multiplexing gain of Vertical-Bell Lab Layered Space-Time (V-BLAST) system. In the MA-SM system, the transmitted symbols are mapped into a high dimensional constellation space including the spatial dimension. The general principle for designing the efficient MA-SM for arbitrary number of transmit antennas and modulation scheme is presented. Moreover, a near-optimal detection scheme with low complexity for MA-SM is also proposed and analyzed. A closed form bound for the bit error probability (BEP) of the proposed detection scheme is also derived in this paper. Numerical results with the comparison among the existing multiple-input multiple-output (MIMO) systems such as space time block code (STBC) and V-BLAST demonstrate the efficiency of MA-SM.
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