In this letter, a low-complexity iterative detector with frequency domain equalization is proposed for generalized spatial modulation (GSM) aided single carrier (SC) transmissions operating in frequency selective channels. The detector comprises three main separate tasks namely, multiple-input multiple-output (MIMO) equalization, active antenna detection per user and symbol wise demodulation. This approach makes the detector suitable for a broad range of MIMO configurations, which includes single-user and multiuser scenarios, as well as arbitrary signal constellations. Simulation results show that the receiver can cope with the intersymbol interference induced by severe time dispersive channels and operate in difficult underdetermined scenarios.

中文翻译：

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时间色散信道中单用户和多用户广义空间调制系统的频域均衡

在这封信中，提出了一种具有频域均衡的低复杂度迭代检测器，用于在频率选择性信道中运行的广义空间调制 (GSM) 辅助单载波 (SC) 传输。检测器包括三个主要的独立任务，即多输入多输出 (MIMO) 均衡、每个用户的有源天线检测和符号方式解调。这种方法使检测器适用于广泛的 MIMO 配置，包括单用户和多用户场景，以及任意信号星座。仿真结果表明，接收机可以应对严重时间色散信道引起的码间干扰，并能在困难的欠定场景中工作。