标题： RIS辅助的全双工空间移位键控在自干扰消除不完善情况下的性能 显示英文标题

标题： Performance of RIS-Assisted Full-Duplex Space Shift Keying With Imperfect Self-Interference Cancellation

摘要： 在本文中，我们考虑了一个全双工（FD）空间移位键控（SSK）通信系统，其中两个用户之间的信息交换仅由可重构智能表面（RIS）协助。 特别是，考虑了发射天线和接收天线之间的环路干扰（LI）以及来自RIS的残留自干扰（SI）的影响。 基于最大似然检测器，我们推导了条件配对误差概率和无条件配对误差概率（UPEP）的数值积分表达式。 由于难以找到闭合形式的解，我们通过高斯-切比雪夫求积（GCQ）方法进行精确估计。 为了获得更多的有用见解，我们推导了高信噪比区域的UPEP表达式，并进一步给出了平均比特误码概率（ABEP）表达式。 进行了蒙特卡洛仿真以验证推导的结果。 发现SI和LI对系统性能有严重的影响。 幸运的是，通过增加RIS单元的数量可以很好地抵消这两种干扰。 显示英文摘要

摘要： In this paper, we consider a full-duplex (FD) space shift keying (SSK) communication system, where information exchange between two users is assisted only by a reconfigurable intelligent surface (RIS). In particular, the impact of loop interference (LI) between the transmit and receive antennas as well as residual self-interference (SI) from the RIS is considered. Based on the maximum likelihood detector, we derive the conditional pairwise error probability and the numerical integration expression for the unconditional pairwise error probability (UPEP). Since it is difficult to find a closed-form solution, we perform accurate estimation by the Gauss-Chebyshev quadrature (GCQ) method. To gain more useful insights, we derive an expression for UPEP in the high signal-to-noise ratio region and further give the average bit error probability (ABEP) expression. Monte Carlo simulations were performed to validate the derived results. It is found that SI and LI have severe impacts on system performance. Fortunately, these two disturbances can be well counteracted by increasing the number of RIS units.