本文研究了指向误差、气动光学效应及Exponentiated Weibull 大气湍流联合效应对OFDM光链路通信性能的影响。其中OFDM链路采用PSK调制，应用Meijer G函数推导得到多载波条件下总平均误码率的闭合表达式。根据平均误码率闭合表达式进行了仿真，分析了不同大气湍流强度、PSK调制阶数、抖动标准差和波束宽度对误码率的影响。通过仿真分析证明基于Exponentiated Weibull大气湍流模型，在不同湍流强度条件下误码率随着发射功率的增加改善近似。当抖动标准差小于0.7及调制阶数小于4时，增大发射功率对改善链路误码率效果明显。

Aiming at the combined effects of the Exponentiated Weibull atmosphere turbulence, aero-optical effects and pointing errors on space optical links, the bit error rate (BER) performance of the orthogonal frequency division multiplexing (OFDM) optical communication link is investigated. OFDM links adopted PSK modulation. The closed-form expression for average bit error rate is derived based on a Meijer’s G function. The relationship between the BER performance and the transmitted optical power under different parameters such as the atmosphere turbulence, the normalized jitter standard deviation and the normalized beam-width is analyzed by simulation. The results show that the BER performance is similarly improved in different intensity turbulence by increasing the transmitted optical power. The BER performance is obviously improved by increasing the transmitted optical power when the normalized jitter standard deviation is less than 0.7 and the modulation order is less than 4.