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On the performance of improved quadrature spatial modulation
ETRI Journal ( IF 1.4 ) Pub Date : 2020-05-03 , DOI: 10.4218/etrij.2019-0431 Tasnim Holoubi 1 , Sheriff Murtala 1 , Nishal Muchena 1 , Manar Mohaisen 2
ETRI Journal ( IF 1.4 ) Pub Date : 2020-05-03 , DOI: 10.4218/etrij.2019-0431 Tasnim Holoubi 1 , Sheriff Murtala 1 , Nishal Muchena 1 , Manar Mohaisen 2
Affiliation
Quadrature spatial modulation (QSM) utilizes the in‐phase and quadrature spatial dimensions to transmit the real and imaginary parts of a single signal symbol, respectively. The improved QSM (IQSM) transmits two signal symbols per channel use through a combination of two antennas for each of the real and imaginary parts. The main contributions of this study can be summarized as follows. First, we derive an upper bound for the error performance of the IQSM. We then design constellation sets that minimize the error performance of the IQSM for several system configurations. Second, we propose a double QSM (DQSM) that transmits the real and imaginary parts of two signal symbols through any available transmit antennas. Finally, we propose a parallel IQSM (PIQSM) that splits the antenna set into equal subsets and performs IQSM within each subset using the same two signal symbols. Simulation results demonstrate that the proposed constellations significantly outperform conventional constellations. Additionally, DQSM and PIQSM provide a performance similar to that of IQSM while requiring a smaller number of transmit antennas and outperform IQSM with the same number of transmit antennas.
中文翻译:
关于改进的正交空间调制的性能
正交空间调制(QSM)利用同相和正交空间维度分别传输单个信号符号的实部和虚部。改进的QSM(IQSM)通过对实部和虚部中的每一个使用两个天线的组合,在每个通道使用中发送两个信号符号。这项研究的主要贡献可以总结如下。首先,我们得出IQSM的错误性能的上限。然后,我们设计星座图集,以最小化几种系统配置的IQSM的错误性能。其次,我们提出了一个双QSM(DQSM),它可以通过任何可用的发射天线发射两个信号符号的实部和虚部。最后,我们提出了一个并行IQSM(PIQSM),它将天线集分成相等的子集,并使用相同的两个信号符号在每个子集中执行IQSM。仿真结果表明,提出的星座明显优于常规星座。此外,DQSM和PIQSM提供与IQSM相似的性能,同时需要较少数量的发射天线,并且在相同数量的发射天线下性能要优于IQSM。
更新日期:2020-05-03
中文翻译:
关于改进的正交空间调制的性能
正交空间调制(QSM)利用同相和正交空间维度分别传输单个信号符号的实部和虚部。改进的QSM(IQSM)通过对实部和虚部中的每一个使用两个天线的组合,在每个通道使用中发送两个信号符号。这项研究的主要贡献可以总结如下。首先,我们得出IQSM的错误性能的上限。然后,我们设计星座图集,以最小化几种系统配置的IQSM的错误性能。其次,我们提出了一个双QSM(DQSM),它可以通过任何可用的发射天线发射两个信号符号的实部和虚部。最后,我们提出了一个并行IQSM(PIQSM),它将天线集分成相等的子集,并使用相同的两个信号符号在每个子集中执行IQSM。仿真结果表明,提出的星座明显优于常规星座。此外,DQSM和PIQSM提供与IQSM相似的性能,同时需要较少数量的发射天线,并且在相同数量的发射天线下性能要优于IQSM。