Adaptive threshold based frequency exclusion algorithm for broadband PLC

R. Vuohtoniemi, Janne J. Lehtomäki, Juha-Pekka Mäkelä
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引用次数: 2

Abstract

Unshielded electrical cables act as antennas during power line communication (PLC) causing unintentional interference for wireless communication. In order to mitigate this interference, PLC systems need to stay silent on frequencies used for wireless communication. In PLC standard CENELEC EN 50561-1, these frequency exclusion requirements are partly adaptive and depend on whether the frequencies are actually used for communication. For reliable detection of the presence of wireless communication signals, we use MED-FCME LAD ACC algorithm. The performance of this algorithm is tested with actual power line measurement data in the 50-52 MHz frequency range. This frequency range is reserved for radio amateur communication and is an especially difficult case for signal detection due to varying power levels with SSB-modulated voice communication. The results indicate that the studied method performs well, providing means for more intelligent spectrum utilization and reduction of interference levels in a broadband cognitive PLC-network.
基于自适应阈值的宽带PLC排频算法
在电力线通信(PLC)中,非屏蔽电缆充当天线,会对无线通信造成无意干扰。为了减轻这种干扰,PLC系统需要在用于无线通信的频率上保持沉默。在PLC标准CENELEC EN 50561-1中,这些频率排除要求部分是自适应的,取决于频率是否实际用于通信。为了可靠地检测无线通信信号的存在,我们使用MED-FCME LAD ACC算法。用50-52 MHz频率范围内的实际电力线测量数据对该算法的性能进行了测试。这个频率范围是为业余无线电通信保留的,由于ssb调制的语音通信的功率水平不同,因此对信号检测特别困难。研究结果表明,该方法性能良好,为宽带认知plc网络中更智能的频谱利用和降低干扰水平提供了手段。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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