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首页> 外文期刊>IEEE Transactions on Communications >Performance Analysis of Spatial Modulation in Overlay Cognitive Radio Communications
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Performance Analysis of Spatial Modulation in Overlay Cognitive Radio Communications

机译：重叠认知无线电通信中空间调制的性能分析

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We study the application of spatial modulation (SM) in overlay cognitive radio (CR) networks, in which the primary and secondary networks work concurrently over the same spectrum band. We assume that the direct link between the primary transmitter and receiver is not available, i.e. broken, and that the CR transmitter assists the primary network as a relay to amplify-and-forward the transmitted symbols of the primary. SM is used in the secondary to split the transmission space into two amplitude-phase modulation (APM) and spatial domains. In the proposed scheme, the secondary transmitter retransmits the primary symbols in APM domain, while its own information is transmitted by the index of transmitting antenna, similar to space shift keying, without causing any interference to the primary receiver. We analyze the performance of the optimal detectors at both the primary and secondary receivers for the case of phase shift keying modulation in terms of the average symbol error rate (ASER). We also study the asymptotic behavior of the ASER at both the primary and secondary at high signal-to-noise ratios. Simulation results show that the SM can be effectively used in overlay CR systems.
机译：我们研究了空间调制（SM）在重叠认知无线电（CR）网络中的应用，其中主要和次要网络在同一频段上同时工作。我们假定主发射机和接收机之间的直接链路不可用，即断开，并且CR发射机作为中继器辅助主网络来放大和转发主发射机的传输符号。 SM用于次级，将传输空间分为两个幅度相位调制（APM）和空间域。在提出的方案中，辅助发射机在APM域中重发主要符号，而它自己的信息则由发射天线的索引发送，类似于空间移位键控，而不会对主要接收机造成任何干扰。我们根据平均符号错误率（ASER）分析了相移键控调制情况下在主接收机和副接收机处的最佳检测器的性能。我们还研究了在高信噪比下，ASER在主要和次要状态下的渐近行为。仿真结果表明，SM可以有效地应用于覆盖CR系统。

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