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光载无线技术(RoF)因其大带宽、高移动性和低传输损耗等特点,成为未来接入网极具前景的解决方案之一。同时,该技术与矢量调制格式结合可以有效提高系统容量。但是如何低成本地产生光矢量微波/毫米波一直是亟待解决的问题。从预编码和光子倍频技术出发,提出多种光子辅助微波/毫米波产生方案,这些方案从成本、器件可用性、系统复杂度、系统容量等角度对传统方案进行了改进,为将来的研究工作提供参考。
Due to its large bandwidth, high mobility and low transmission loss, optical wireless technology (RoF) has become one of the most promising solutions for future access networks. At the same time, this technology combined with vector modulation format can effectively improve the system capacity. However, how to generate light vector microwaves / millimeter waves at low cost has always been a pressing issue. Based on the precoding and photon frequency multiplication techniques, a variety of photon-assisted microwave / millimeter wave generation schemes are proposed. These schemes improve the traditional scheme from the aspects of cost, device availability, system complexity and system capacity, for reference.