标题： 基于RIS的毫米波MIMO传输空间散射调制 显示英文标题

标题： RIS-Aided Spatial Scattering Modulation for mmWave MIMO Transmissions

摘要： 本文研究了可重构智能表面（RIS）辅助的空域散射调制（SSM）方案，用于毫米波（mmWave）多输入多输出（MIMO）系统，在该系统中，视距（LoS）和非视距（NLoS）路径分别在发射器-RIS和RIS-接收器信道中考虑。 基于最大似然检测器，推导了在接收波束正确和解调错误两种情况下的RIS-SSM方案的条件对码错误概率（CPEP）表达式。 此外，我们通过两种不同的方法推导了无条件对码错误概率（UPEP）的闭合形式表达式：利用散射器增益递减顺序的概率密度函数和矩生成函数表达式。 为了提供更有用的见解，我们在高信噪比（SNR）区域推导了RIS-SSM方案的渐近UPEP和分集增益。 根据UPEP和相应的欧几里得距离，我们得到了平均比特错误概率（ABEP）的联合上界。 还提供了一个新的遍历容量分析框架，以获得所提出系统的有效容量。 最后，所有推导结果都通过广泛的蒙特卡洛仿真得到验证，结果表明，所提出的RIS-SSM方案在可靠性方面优于基准方案。 显示英文摘要

摘要： This paper investigates the reconfigurable intelligent surface (RIS) assisted spatial scattering modulation (SSM) scheme for millimeter-wave (mmWave) multiple-input multiple-output (MIMO) systems, in which line-of-sight (LoS) and non-line-of-sight (NLoS) paths are respectively considered in the transmitter-RIS and RIS-receiver channels. Based on the maximum likelihood detector, the conditional pairwise error probability (CPEP) expression for the RIS-SSM scheme is derived under the two cases of received beam correct and demodulation error. Furthermore, we derive the closed-form expressions of the unconditional pairwise error probability (UPEP) by employing two different methods: the probability density function and the moment-generating function expressions with a descending order of scatterer gains. To provide more useful insights, we derive the asymptotic UPEP and the diversity gain of the RIS-SSM scheme in the high SNR region. Depending on UPEP and the corresponding Euclidean distance, we get the union upper bound of the average bit error probability (ABEP). A new framework for ergodic capacity analysis is also provided to acquire the proposed system's effective capacity. Finally, all derivation results are validated via extensive Monte Carlo simulations, revealing that the proposed RIS-SSM scheme outperforms the benchmarks in terms of reliability.