A security-enhanced, spectral-efficient, and power-efficient multi-beam wireless communication scheme based on random frequency diverse array (RFDA) is proposed in this paper. (AN)-aided directional modulation (DM) schemes. Furthermore, with the aid of spatial modulation (SM) technology and cooperative legitimate users (LUs), we can transmit more information bits by the use of LU number informations than the single modulation symbols. Unlike conventional zero-forcing (ZF) beamforming for multi-beam DM, we design a FDA beamforming vector for each LU based on the minimum transmit power method. Numerical simulations show that (1) the proposed scheme is power-efficient compared to the conventional schemes, (2) the proposed scheme can transmit more information bits than the conventional schemes, and (3) the proposed scheme can ensure communication security when eavesdroppers (Eves) are proximal to LUs or even in same locations.

中文翻译：

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基于随机频分阵列的空间调制和MP-WFRFT辅助多波束无线通信方案。

提出了一种基于随机频率分集阵列（RFDA）的安全性增强，频谱高效，功率高效的多波束无线通信方案。（AN）辅助的定向调制（DM）方案。此外，借助空间调制（SM）技术和合作合法用户（LU），我们可以通过使用LU编号信息发送比单个调制符号更多的信息比特。与用于多光束DM的常规零强制（ZF）波束成形不同，我们基于最小发射功率方法为每个LU设计FDA波束成形矢量。数值模拟表明：（1）与常规方案相比，该方案具有更高的功率效率；（2）与常规方案相比，该方案可以传输更多的信息比特；