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首页> 外文会议>Signal Acquisition and Processing, 2009. ICSAP 2009 >A Robust Multiuser Detection Based Scheme for Crosstalk Mitigation in DMT VDSL with Non-Gaussian Noise
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A Robust Multiuser Detection Based Scheme for Crosstalk Mitigation in DMT VDSL with Non-Gaussian Noise

机译：具有非高斯噪声的DMT VDSL中基于健壮的多用户检测的串扰缓解方案

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摘要

Very-high-rate digital subscriber line (VDSL) transmission systems mainly suffer from crosstalk and impulse noise. The traditional single-user data detector for such systems merges crosstalk into the background noise, which is assumed to be white and Gaussian. Recent advances in research show the potential benefits of multiuser detection for VDSL systems with crosstalkers and the nature of crosstalk signals. Impulse noise is one of the most difficult transmission impairments to suppress. Thus, this paper presents a robust multiuser detection technique for jointly mitigating crosstalk and impulse noise in discrete multitone very-high-rate digital subscriber line (DMT VDSL) systems. The robustification is based on the concept of M-estimators found in the robust statistics. A new M-estimator is proposed for robustifying the detector. The approach is corroborated with simulation results. Simulation results demonstrate that the proposed detector with significant performance gain outperforms the alpha, Huber, and Hampel M-estimators based detectors with little attendant increase in computational complexity.
机译：高速数字用户线（VDSL）传输系统主要遭受串扰和脉冲噪声的困扰。用于此类系统的传统单用户数据检测器将串扰合并到背景噪声中，背景噪声被假定为白噪声和高斯噪声。最近的研究进展表明，对于具有串扰者的VDSL系统，多用户检测的潜在好处以及串扰信号的性质。脉冲噪声是最难以抑制的传输损伤之一。因此，本文提出了一种鲁棒的多用户检测技术，用于联合缓解离散多音超高速率数字用户线（DMT VDSL）系统中的串扰和脉冲噪声。鲁棒性基于鲁棒统计中发现的M估计量的概念。提出了一种新的M估计器来增强检测器的鲁棒性。仿真结果证实了该方法。仿真结果表明，所提出的具有显着性能增益的检测器优于基于alpha，Huber和Hampel M估计器的检测器，并且在计算复杂度上几乎没有增加。

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