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对流层散射通信是一种典型的随参信道,多径衰落十分突出,所以要实现高速大容量散射通信是非常困难的。为了抵抗由于多径衰落所带来的散射通信性能恶化,提出了基于MIMO-OFDM结构的的新一代对流层散射通信系统框架。通过分析散射信道中的MIMO-OFDM结构,讨论MIMO-OFDM技术应用的主要问题,发现运用该技术可以有效提高散射通信的可靠度,克服高速数据在散射信道下的多径衰落,实现散射的大容量、远距离通信。
Tropospheric scatter communication is a typical follow-on channel, and multipath fading is very prominent, so it is very difficult to realize high-speed and large-capacity scattering communication. In order to resist the degradation of scattering communication performance caused by multipath fading, a new generation of tropospheric scatter communication system framework based on MIMO-OFDM structure is proposed. By analyzing the structure of MIMO-OFDM in scattering channel, the main problems of MIMO-OFDM technology are discussed. It is found that this method can effectively improve the reliability of scattering communication, overcome the multipath fading of high-speed data in scattering channel and achieve large scattering Capacity, long distance communication.