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首页> 外文期刊>International journal of communication systems >Space‐time block coded spatial modulation with labeling diversity
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Space‐time block coded spatial modulation with labeling diversity

机译：带标签分集的时空分组编码空间调制

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摘要

Space-time block coded spatial modulation (STBC-SM) exploits the advantages of both spatial modulation and the Alamouti space-time block code. Meanwhile, space-time labeling diversity has demonstrated an improved bit error rate (BER) performance in comparison to the latter. Hence, in this paper, we extend the application of labeling diversity to STBC-SM, which is termed STBC-SM-LD. Under identical channel assumptions, STBC-SM-LD exhibits superior BER performance compared to STBC-SM. For example, with , 64-quadrature amplitude modulation (64-QAM), STBC-SM-LD has a BER performance gain of approximately 2.6dB over STBC-SM. Moreover, an asymptotic bound is presented to quantify the average BER performance of M-ary QAM STBC-SM-LD over independent and identically distributed Rayleigh frequency-flat fading channels. Monte Carlo simulations for STBC-SM-LD agree well with the analytical framework. In addition to the above, low-complexity (LC) near-maximum-likelihood detectors for space-time labeling diversity and STBC-SM-LD are presented. Complexity analysis of the proposed LC detectors shows a substantial reduction in computational complexity compared to their ML detector counterparts. For example, the proposed detector for STBC-SM-LD achieves a 91.9% drop in computational complexity for a, 64-QAM system. The simulations further validate the near-maximum-likelihood performance of the LC detectors.
机译：空时分组编码空间调制（STBC-SM）充分利用了空间调制和Alamouti空时分组编码的优势。同时，时空标记多样性已证明与后者相比具有改进的误码率（BER）性能。因此，在本文中，我们将标签多样性的应用扩展到称为STBC-SM-LD的STBC-SM。在相同的信道假设下，与STBC-SM相比，STBC-SM-LD表现出卓越的BER性能。例如，使用64正交幅度调制（64-QAM），STBC-SM-LD的BER性能增益比STBC-SM大约高2.6dB。此外，提出了一个渐近界线来量化在独立且分布均匀的瑞利频率平坦衰落信道上的M元QAM STBC-SM-LD的平均BER性能。 STBC-SM-LD的蒙特卡洛模拟与分析框架非常吻合。除上述内容外，还提出了用于时空标记多样性和STBC-SM-LD的低复杂度（LC）接近最大似然检测器。所提出的LC检测器的复杂度分析表明，与ML检测器相比，其计算复杂度大大降低。例如，针对64-QAM系统，建议的STBC-SM-LD检测器的计算复杂度降低了91.9％。仿真进一步验证了LC检测器的接近最大似然性能。

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