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Reconfigurable Intelligent Surface-Aided Spatial Media-Based Modulation
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DOI：10.1109/TGCN.2023.3289669.png)
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摘要
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The demands for high data rate, reliability, high energy efficiency, high spectral efficiency, and low latency communication have been increasing rapidly. For this reason, communication models that use limited resources in the best way, allow fast data transmission, and increase performance have become very important. In this work, a novel high energy and spectral efficient reconfigurable intelligent surface-aided spatial media-based modulation system (RIS-SMBM) is proposed for Rayleigh fading channels. In addition to the bits carried in the M-ary quadrature amplitude modulation ( M-QAM) symbol while media-based modulation (MBM) provides data bits to be carried in the indices of different channels according to the radio frequency (RF) mirrors are on or off, spatial modulation (SM) provides data bits to be carried in the indices of the transmit antennas. By combining these two modulation schemes, the spectral efficiency increases considerably since the amount of information transmitted in the same time interval is substantially increased. The optimal maximum-likelihood (ML) detector and the enhanced low-complexity (ELC) detector for the RIS-SMBM system are proposed. The ELC detector achieves near ML performance while reducing the complexity of the optimal ML detector for the proposed RIS-SMBM system. We analyze the average bit error rate (ABER), throughput, complexity, and energy efficiency for the RIS-SMBM scheme and verify the analytical and theoretical results with Monte Carlo simulations. It has been observed that the proposed system provides better error performance as well as providing higher spectral and energy efficiency than benchmark systems. Also, the effect of imperfect channel state information on the performance of the proposed RIS-SMBM system is investigated.
Keyword:
Transmitting antennas
Modulation
Wireless communication
Radio frequency
Mirrors
Spectral efficiency
Detectors
Media
Reconfigurable intelligent surfaces
Spatial resolution
Media-based modulation
index modulation
spatial modulation
spatial media-based modulation
reconfigurable intelligent surface
期刊
I
IF:
6.7
论文数:
1.4K
被引数:
4.3K
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