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DMT系统中一种易于实现的时域均衡器 被引量:1

A practical TEQ design method for DMT system
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摘要 总结了DMT系统中时域均衡器(TEQ)的主要设计方法,指出最大缩短信噪比(MSSNR)TEQ的最优设计方法很难实时实现。提出了一种MSSNR TEQ的次优设计方法,它首先估计出目标抽样窗的最优延迟,然后用分步求解法求出TEQ的抽头系数。和最优方法相比,次优方法的计算量大幅度减少,可实时实现,而其缩短信噪比的损失很小。仿真实验验证了次优方法的有效性。 The major approaches for time-domain equalizer (TEQ) design in DMT system are summarized. After pointing out that the optimal design method of MSSNR TEQ cant be real-time implemented by DSP, we present a suboptimal MSSNR TEQ design method, which reduces the computational complexities greatly by using a new method to estimate the optimal delay D and a proposed step-by-step algorithm to compute the TEQ taps. The results of simulations show the validity of the suboptimal method.
出处 《通信学报》 EI CSCD 北大核心 2004年第1期110-118,共9页 Journal on Communications
基金 信息产业部电子工业发展基金资助项目(20001077)
关键词 离散多音调制 时域均衡器 缩短信噪比 最优延迟 DMT discrete multitone modulation time-domain equalizer shortening SNR optimal delay
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参考文献7

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  • 2相里瑜.ADSL用户端MODEM中的均衡和回波消除技术研究[D].天津:南开大学,2003.
  • 3Guner Arslan, Brian L Evans, Sayfe Kiaei. Equalization for discrete multitone transceivers to maximize bit rate [J]. IEEE Transactions on Signal Processing, 2001,49 (12):3123-3135.
  • 4Guner Arslan, Biao Lu, Lloyd D Clark, et al. Iterative refinement methods for time domain equalizer design [C]// Hindawi Publishing Corporation EURASIP Jour- nal on Applied Signal Processing. USA: Austin, 2006: 1 -12.
  • 5胡峻岭,刘文江,王勇.数字锁相实现ADSL系统中的时钟同步[J].微电子学与计算机,2003,20(12):19-21. 被引量:1

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