电力无线专网中基于频谱检测的SDR技术

摘要

Power private wireless network on 230 MHz is an important part of the power load management system,however,along with the expanding of service range and the increasing of service volume,its shortcomings of low transmission rate and low spectrum efficiency stand out.Spectrum detection mechanism can effectively find out the idle spectra,while the software defined radio can fully make use of the detected spectrum holes and thus raise the spectrum efficiency.Accordingly,the paper proposes an implementation applying spectrum detection based software defined radio technology into the power private wireless networks.Take the 230 MHz private spectrum of power system for example,the digital circuit of the transceiver in the communication system in accordance with its spectrum characteristics is designed,and performance on spectrum detection is tested and verified through MATLAB at last.%230 MHz电力无线专网系统作为目前电力负荷管理系统的主要构成部分之一,随着服务面的扩展和服务量的增大,传输速率低下、频谱资源浪费的缺点日益突出.频谱检测机制能够有效地搜索未使用的频谱空穴,而软件无线电可以充分利用检测到的频谱空穴并有效地提高频带利用率.提出了一种针对电力无线专网的基于频谱检测的软件无线电技术,结合电力无线专网230 MHz频段特点设计了通信系统中收发信机的数字电路,并通过MATLAB仿真验证了方案在在频谱检测上的性能表现.