光空间调制技术的研究进展

光空间调制(OSM)作为一种新型的光多输入多输出(OMIMO)技术，利用空间域激光器索引号额外携带信息，有效地提高了系统的传输速率和能量效率；同时，由于每符号周期仅激活一个激光器传递信息，较好地解决了传统OMIMO系统中的信道干扰和同步等问题。本文首先介绍了现有的几种光空间调制技术，概括和总结其在国内外的研究现状。此外，从传输速率、频谱效率、误码率(BER)和计算复杂度等四个方面对现有的OSM、光空移键控(OSSK)、增强型光空间调制(EOSM)和差分光空间调制(DOSM)等方案进行了比较分析。最后，指出了OSM中亟需解决的关键性问题及其未来的发展方向。

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关键词：

无线光通信; 光空间调制; 传输速率; 误码率

基金项目：

国家自然科学基金资助项目(61861026, 61875080)

导出参考文献，格式为：

引用本文：毛一聪, 王惠琴, 张悦, 等. 光空间调制技术的研究进展[J]. 光电工程, 2020, 47(3): 190712.

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