【摘要】 通过对自由空通信中的多址环境空间无线光通信的强背景噪声等特点的分析以及对多种多址方式的对经，综合讨论自由空间无线光通信中采用码分多址技术的可行性、优越性和技术难点在此基础上，提出了码多址和空分多址相结合的方案以及ＣＤＭＡ的系统模型更多还原

【Abstract】 By analyzing the multiple access environment, strong background noise etc, and comparing the features of several multiplexing techniques, the possibility, pribilege and technical difficulties of CDMA in free-space wireless optical communication are discussed The scheme of CDMA combined with SDMA is presented, as well as the system model更多还原