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Trellis coded quadrature spatial modulation

机译：网格编码正交空间调制

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摘要

In this paper, a novel multiple-input multiple-output (MIMO) transmission scheme calledtrellis coded quadrature spatial modulation(TC-QSM), is proposed. In the proposed scheme, trellis coded modulation (TCM) principle is applied to the emerging quadrature spatial modulation (QSM) scheme, and a trellis encoder and a QSM mapper are jointly designed to benefit from both coding and multiplexing gains. At the receiver side, a soft-decision Viterbi decoder is used along with a QSM decoder to obtain the optimum error performance. Considering our design criterion, TC-QSM schemes are designed for different number of trellis states, transmit antennas and spectral efficiencies. The pairwise error probability (PEP) of the TC-QSM scheme is derived over quasi-static Nakagami-m, Rician and Rayleigh fading channels and an upper bound on the average bit error probability (BEP) is obtained. Through comprehensive Monte Carlo simulations, the effect of signal and spatial bits on uncoded and trellis coded SM and QSM schemes over Nakagami-mand Rician fading channels are investigated for different fading parameters. Moreover, the error performance of the TC-QSM and SM with trellis coding (SM-TC) schemes are compared for different spectral efficiency values, where it is revealed that the proposed TC-QSM scheme provides an interesting trade-off between performance and implementation cost, and achieves an improved error performance over reference schemes including SM, QSM and SM-TC.
机译：本文提出了一种新颖的多输入多输出（MIMO）传输方案，称为网格编码正交空间调制（TC-QSM）。在提出的方案中，将网格编码调制（TCM）原理应用于新兴的正交空间调制（QSM）方案，并共同设计网格编码器和QSM映射器，以同时受益于编码和复用增益。在接收器端，将软判决维特比解码器与QSM解码器一起使用以获得最佳错误性能。考虑到我们的设计标准，TC-QSM方案针对不同数量的网格状态，发射天线和频谱效率而设计。在准静态Nakagami-m，Rician和Rayleigh衰落信道上推导TC-QSM方案的成对错误概率（PEP），并获得平均误比特率（BEP）的上限。通过全面的蒙特卡洛模拟，研究了信号和空间比特对中上级Rician衰落信道上未编码和网格编码的SM和QSM方案的影响，以了解不同的衰落参数。此外，针对不同的频谱效率值，比较了采用网格编码（SM-TC）方案的TC-QSM和SM的误码性能，结果表明，提出的TC-QSM方案在性能和实现之间提供了有趣的权衡成本，并且与包括SM，QSM和SM-TC的参考方案相比，实现了改进的错误性能。

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