中文摘要：

分析了Gamma-Gamma大气信道模型下无线光载射频（ROFSO）通信系统传输BPSK信号的误码率性能,推导出了该系统的误码率公式,并且利用Matlab软件计算出理论值与仿真结果。研究发现,ROFSO系统与使用OOK调制的常规FSO系统相比具有良好的误码率性能,不需要门限判决,不存在性能限。同时,通过分析传输距离、接收天线孔径和大气折射率结构常数等参数对系统的影响,得到了不同参数对系统影响的规律。

英文摘要：

Investigated was the bit error rate（BER）performance of transmitting BPSK signal of the radio over free space optical（ROFSO）system in a Gamma-Gamma atmospheric turbulence model.The average BER expression of this system was derived and the results were obtained by both theoretical arithmetic and numerical simulations with Matlab software.It is shown that,compared with common FSO system using OOK modulation,ROFSO system can own better BER performance,and it requires no threshold decision.Meanwhile,the effects of the propagation distance,the diameters of the receiving lenses and the structure constant of the refractive index on the system＇s performance are discussed.