In this paper, the receive generalized spatial modulation (RGSM) scheme with reconfigurable intelligent surfaces (RIS) assistance is proposed. The RIS group controllers change the reflected phases of the RIS elements to achieve the selection of receive antennas and phase shift keying (PSK) modulation, and the amplitudes of the received symbols are adjusted by changing the activation states of the elements to achieve amplitude phase shift keying (APSK) modulation. Compared with the existing RIS-aided receive generalized space shift keying (RIS-RGSSK) scheme, the proposed scheme realizes that the selected antennas respectively receive different modulation symbols, and only adds the process to control the modulated phases and the activation states of elements. The proposed scheme has better bit error rate (BER) performance than the RIS-RGSSK scheme at the same rate. In addition, the results show that for low modulation orders, the proposed scheme will perform better with PSK, while for high modulation order, APSK is better. The proposed scheme is a promising scheme for future wireless communication to achieve high-efficiency.

翻译：本文提出了一种基于可重构智能表面（RIS）辅助的接收广义空间调制（RGSM）方案。RIS组控制器通过改变RIS单元的反射相位实现接收天线选择与相移键控（PSK）调制，并通过调整单元的激活状态改变接收符号的幅度，从而实现幅度相移键控（APSK）调制。与现有的RIS辅助接收广义空间移位键控（RIS-RGSSK）方案相比，所提方案实现了所选天线分别接收不同调制符号，且仅增加了对调制相位和单元激活状态的控制过程。在相同速率下，所提方案的误比特率（BER）性能优于RIS-RGSSK方案。此外，结果表明：对于低阶调制，所提方案采用PSK效果更优；而对于高阶调制，APSK更具优势。所提方案有望成为未来无线通信中实现高效传输的潜在技术。