Reduction of the effect of impulsive noise on image transmission in OFDM-based power line communications
Reduction of the effect of impulsive noise on image transmission in OFDM-based power line communications
复制标题
减少脉冲噪声对基于 OFDM 电力线通信中图像传输的影响
DOI：
10.1109/it4od.2016.7479318
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
A. Tamtaoui
中科院分区：
文献类型：
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作者：
Samir Laksir;A. Tamtaoui
使用电力线通信（PLC）发送多媒体数据（例如，数据、图像和视频）已经显著增长。事实上，脉冲噪声（IN）会导致PLC通信性能的显著下降。在本文中，我们提出了研究在正交频分复用（OFDM）的PLC图像通信的影响。文献[9]提出了一种改进的传统迭代IN降低算法，可用于改善OFDM系统的误比特率。但是，这种迭代算法对于提高图像通信中的视觉质量峰值信噪比（PSNR）性能是不够的。首先，我们使用卷积编码器（CE）研究其性能的BER和PSNR。然后，我们修改了它的概念，引入CE和维特比译码器的迭代算法。最后，我们的目的是显示的视觉质量的重建图像的PSNR性能的BER退化的影响。我们的研究结果表明，该方法提供了良好的PSNR和视觉质量的改善比传统的算法与CE。
Sending multimedia data (e.g. data, image and video) using Power Line Communications (PLC) has been growing significantly. In fact, impulsive noise (IN) causes significant degradation which restricts communication performance in PLC. In this paper, we propose to study the impact of IN on image communication in Orthogonal Frequency Division Multiplexing (OFDM) based PLC. A strightforward conventional iterative IN reduction algorithm, presented in [9] can be applied to improve bit-error rate (BER) in OFDM system. But, this iterative algorithm is insufissant to improve the visual quality Peak Signal-to-Noise Ratio (PSNR) performance in image communication. First, we study its performance in terms of BER and PSNR using a convolutional encoder (CE). Then, we modify its concept by introducing CE and Viterbi decoder into the iterative algorithm. Finally, we aim to show the impact of BER degradation on visual quality PSNR performance of the reconstructed image. Our results lay out that the proposed method provides good PSNR and visual quality improvement than the conventional algorithm with and without CE.