关键词: 独立分量分析, 电力线信道噪声, 盲分离

Abstract: A denoising method for low voltage power line signals based on Independent Component Analysis（ICA） is proposed.In this paper，channel noises of low voltage power line and the principle of ICA are introduced.The proposed method is applied to denoising low voltage power line signals using FASTICA algorithm based on negentropy and is compared with the wavelet denoising method.The experimental results show that the denoising performance of the proposed method is very near to the wavelet denoising method.The trait of proposed denoising method for low voltage power line signals is that noise cancellation is realized by blind source separation of the power line signals and noises.Compared with the wavelet denoising method the proposed method is easier to use and possesses a good denoising effect and good adaptability.

Key words: ICA, power line channel noise, BSS