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[ "余明宸(1991-),男,宁波大学硕士生,主要研究方向为电力线通信系统脉冲干扰。" ]
[ "李有明(1963-),男,宁波大学通信技术研究所教授、博士生导师,主要研究方向为宽带通信、电力线通信、协作中继、认知无线电等。" ]
[ "付彩梅(1990-),女,宁波大学硕士生,主要研究方向为认知无线电中的频谱检测技术。" ]
[ "周桂莉(1992-),女,宁波大学硕士生,主要研究方向为水声通信系统中资源分配和干扰抑制。" ]
网络出版日期:2016-11,
纸质出版日期:2016-11-20
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余明宸, 李有明, 付彩梅, 等. 基于硬阈值迭代的电力线载波通信脉冲噪声抑制方法[J]. 电信科学, 2016,32(11):101-106.
Mingchen YU, Youming LI, Caimei FU, et al. Iterative hard thresholding based impulsive noise suppression method in power line communication system[J]. Telecommunications science, 2016, 32(11): 101-106.
余明宸, 李有明, 付彩梅, 等. 基于硬阈值迭代的电力线载波通信脉冲噪声抑制方法[J]. 电信科学, 2016,32(11):101-106. DOI: 10.11959/j.issn.1000-0801.2016277.
Mingchen YU, Youming LI, Caimei FU, et al. Iterative hard thresholding based impulsive noise suppression method in power line communication system[J]. Telecommunications science, 2016, 32(11): 101-106. DOI: 10.11959/j.issn.1000-0801.2016277.
在电力线载波通信系统中,由于脉冲噪声的存在,系统性能会受到严重影响。考虑到脉冲噪声在时域上具有稀疏性,基于压缩感知的脉冲噪声估计方法被广泛采用。提出了一种基于硬阈值迭代的压缩感知方法来估计脉冲噪声。该方法通过迭代求解更新阈值,然后利用阈值函数对脉冲噪声进行估计,最后在接收信号中减去脉冲噪声的估计值,完成对脉冲噪声的抑制。仿真结果表明,该方法能够准确估计脉冲噪声幅值点,同时在均方误差与估计信噪比的性能上都有提高。
The performance of power line communication systems is seriously affected by impulsive noise.The compressed sensing theory has been applied for estimation in view of the sparse property of impulsive noise in the time domain.A compressed sensing method based on the iterative hard thresholding was proposed to estimate the impulsive noise.Firstly
the thresholding value was updatedby iteration
and then the thresholding function was used to estimate the impulsive noise.Finally
the impulsive noise was cancelled by subtracting the estimation value from the received signal.Simulation results show that the proposed method can efficiently estimate the impulsive noise and promote the performance bothinmean square error and signal to noise ratio.
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