In this letter, we investigate a novel quadrature spatial scattering modulation (QSSM) transmission technique based on millimeter wave (mmWave) systems, in which the transmitter generates two orthogonal beams targeting candidate scatterers in the channel to carry the real and imaginary parts of the conventional signal, respectively. Meanwhile, the maximum likelihood (ML) detector is adopted at the receiver to recover the received beams and signals. Based on the ML detector, we derive the closed-form average bit error probability (ABEP) expression of the QSSM scheme. Furthermore, we evaluate the asymptotic ABEP expression of the proposed scheme. Monte Carlo simulations verify the exactness and tightness of the derivation results. It is shown that the ABEP performance of QSSM is better than that of traditional spatial scattering modulation.

翻译：本文研究了一种基于毫米波系统的正交空间散射调制（QSSM）传输技术，其中发射机生成两束正交波束，分别对准信道中的候选散射体，以承载传统信号的实部和虚部。同时，接收端采用最大似然（ML）检测器来恢复接收到的波束和信号。基于ML检测器，我们推导了QSSM方案的平均误比特率（ABEP）闭式表达式。此外，我们还评估了所提方案的渐近ABEP表达式。蒙特卡洛仿真验证了推导结果的准确性和紧凑性。结果表明，QSSM的ABEP性能优于传统的空间散射调制。