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Adaptive Spatial Scattering Modulation
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DOI：10.1109/TWC.2021.3075921.png)
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摘要
En 中文
In this paper, two novel adaptive spatial scattering modulation (ASSM) algorithms, namely unequal transmission probability-based ASSM (UTP-ASSM) and equal transmission probability-based ASSM (ETP-ASSM), are proposed to pursue a better tradeoff between the computational complexity and spectral efficiency. According to available channel state information, the proposed ASSM algorithms are conducted to compute the optimal numbers of scatters and the optimal modulation orders constrained by the maximal tolerable symbol error probability (SEP). In addition, the minimal tolerate value of the minimal tolerant signal-to-noise ratio and SEP threshold are computed with a given data rate requirement by the bisection algorithm. At the receiver, a new type of optimal maximum likelihood detector is proposed to enhance the SEP performance. Furthermore, the union upper bound on the SEP is derived and analyzed. In addition, the computational complexity and system performance of the ASSM schemes are analyzed. Simulation results demonstrate that the proposed ASSM algorithms yield a lower SEP than the conventional spatial scattering modulation at the same value of average data rate.
Keyword:
Modulation
Constellation diagram
Detectors
Radio frequency
Wireless communication
Upper bound
Scattering
Adaptive spatial scattering modulation (ASSM)
unequal transmission probability-based ASSM (UTP-ASSM)
equal transmission probability-based ASSM (ETP-ASSM)
symbol error probability (SEP)
SEP threshold
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期刊
IF:
10.7
论文数:
1.3W
被引数:
5.3W
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引用论文
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