The performance of wireless optical MIMO system with multiple pulse position modulation (MPPM) over correlated fading channel is investigated. The combined effects of atmospheric attenuation, atmospheric turbulence, and pointing error are taken into consideration. The bit error rate (BER) and the ergodic channel capacity are analyzed by utilizing the Poisson counting model and the exponential correlation model. Moreover, their approximate expressions are derived. The simulation results demonstrate that the pointing error is the most prominent influence factor over weak correlated channel. The performance degradation caused by a high channel correlation coefficient is more than that of pointing error in strong correlated channel. Therefore, the use of pointing, acquisition, and tracking (PAT) system and reasonable arrangement of the number and spacing of antennas at the transceiver are the keys to improve system performance.

中文翻译：

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相关衰落信道上具有组合效应的MPPM编码无线光学MIMO系统的性能评估

研究了在相关衰落信道上具有多脉冲位置调制（MPPM）的无线MIMO系统的性能。考虑了大气衰减，大气湍流和指向误差的综合影响。利用泊松计数模型和指数相关模型对误码率（BER）和遍历信道容量进行了分析。此外，推导了它们的近似表达式。仿真结果表明，在弱相关信道上，指向误差是最突出的影响因素。高信道相关系数导致的性能下降比强相关信道中的指向错误要严重。因此，使用指向，获取，