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：用于毫米波传输的正交空间散射调制技术（QSSM）的研究。在该技术中，发射器针对信道中的候选散射体生成两个正交波束，分别携带信号的实部和虚部。接收器采用最大似然检测器(receive the received beams and signals)来恢复接收到的波束和信号。根据最大似然检测器，本文导出了 QSSM 方案的平均比特错误率（ABEP）表达式。此外，我们还评估了所提出方案的渐近 ABEP 表达式。蒙特卡罗仿真验证了导出结果的准确性和紧密性。研究表明， QSSM 的 ABEP 性能优于传统空间散射调制技术。