U/V超视距通信信道分析与系统设计

Analysis and System Design of VHF/UHF BLOS Communication Channel

以充分开发利用U/V频段通信资源、研发U/V频段超视距通信系统为目标,在充分分析超视距传播信道特点的基础上,以大量野外实测数据为支撑,提出了一种适合U/V超视距通信系统方案,将频率隐分集、降速率与失真自适应解调以及自适应变速率有机结合,对混合、散射信道条件下的误码性能进行了仿真分析以及实测验证,验证了方案的可行性,实现了U/V频段通信设备的超视距通信能力拓展。

In order to take full advantage of the VHF/UHF resource,study and develop VHF/UHF BLOS communication system,this paper proposes a VHF/UHF BLOS communication system scheme based on analysis of BLOS communication channel characteristics and large numbers of field measured data.This scheme combines frequency implicit diversity,decreasing rate,distortion adaptive demodulation and adaptive variable rate.The simulation analysis and practical verification are performed for bit error performance under mixed and scattered channel,and the results show that the proposed scheme is available and can extend the BLOS communication capability of VHF/UHF communication equipment.