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一种新的PLC系统窄带干扰抑制算法

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Indexed by: Journal Article

Date of Publication: 2011-12-10

Journal: 通信技术

Volume: 44

Issue: 12

Page Number: 33-35

ISSN: 1002-0802

Key Words: 抑制干扰-正交频分复用;窄带干扰抑制;循环前缀-最小递推二乘法

Abstract: 针对电力线通信中的窄带干扰( NBI,Narrowband Interference),提出了一种基于循环前缀的递推最小二乘(CP-RLS,Cyclic Prefix-recursive Least Square)算法,并将该算法与干扰抑制-正交频分复用(IS-OFDM,Interference Suppressing-orthogonal Frequency Division Multiplexing)技术、循环前缀-分块最小均方算法(CP-BLMS,Cyclic Prefix-block Least Mean Square)以及线性快速分块最小均方(LFBLMS,Linear Fast Block Least Mean Square)算法进行了比较.仿真结果表明,在NBI功率较大时,CP-RLS算法的BER性能与CP-BLMS、LFBLMS算法相比提高了一个数量级,且随着NBI功率进一步增加,其BER性能几乎没有变差;CP-RLS算法更适合信道条件复杂多变的电力线通信.

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