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An efficient and robust method to determine the optimal tap coefficients of high speed FIR equalizer

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Abstract

The FIR equalizer is a common way to compensate for the effect of ISI in high speed data transmission. One key issue for the FIR equalizer design is to find the optimal tap coefficient (TC) set. In this work, the TC search is formulated as an eye-diagram based global optimization problem and an efficient and robust multi-start point (MSP) optimizer is developed and applied to determine the optimal TC set. To guarantee a robust optimization procedure, an objective function based on the eye diagram is studied. It proves that a 330x speedup is provided by the proposed method as compared with the Monte Carlo method. With the proposed method, the optimal design point of the equalizer can be further estimated.

摘要

FIR 均衡器通常用于补偿高速数字通信中的码间干扰。 如何找到最优抽头系数是设计 FIR 均衡器的关键环节。 在本次研究中, 抽头系数的搜索被转化成一个基于眼图的全局优化问题。 一个高效稳定的多起始点优化程序被研究并用于选择最优抽头系数。 为了保证优化过程的稳定性, 文章提出并研究了基于眼图的目标函数。 实验证明提出的方法在搜索速度上比蒙特卡罗方法提高了 330 倍。 通过提出的搜索方法, 均衡器的最优设计点可以进一步被估测。

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References

  1. 1

    Liu J, Lin X. Equalization in high-speed communication systems. IEEE Circ Syst Mag, 2004, 4: 4–17

  2. 2

    Li M, Wang S, Tao Y, et al. FIR filter optimization as pre-emphasis of high-speed backplane data transmission. Electron Lett, 2004, 40: 912–913

  3. 3

    Kim J, Lee J, Song E, et al. Compensation of undesired channel effects by frequency domain optimization of preemphasis filter for over Gb/s signaling. In: Proceedings of International Conference on Communications, Circuits and Systems, Guilin, 2006. 721–726

  4. 4

    Cheng Y S, Wu R B. Direct eye diagram optimization for arbitrary transmission lines using FIR filter. IEEE Trans Compon Packag Manuf Technol, 2011, 1: 1250–1258

  5. 5

    Zsolt U, Lasdon L, Plummer J, et al. Scatter search and local NLP solvers: a multistart framework for global optimization. Informs J Comput, 2007, 19: 328–340

  6. 6

    Huang G, Qian L, Saibua S, et al. An efficient optimization based method to evaluate the DRV of SRAM cells. IEEE Trans Circ Syst I, 2013, 60: 1511–1520

  7. 7

    Michael B. Nonlinear Optimization with Engineering Applications. Berlin: Springer, 2008

  8. 8

    Kolda T, Lewis R, Torczon V. Optimization by direct search: new perspective on some classical and modern methods. SIAM Rev, 2003, 45: 385–482

  9. 9

    Liu H, Liu J, Payne R, et al. A 18mW 10Gbps continuous-time FIR equalizer for wired line data communications in 0.12µm CMOS. In: Proceedings of the IEEE Custom Integrated Circuits Conference, San Jose, 2009. 113–116

  10. 10

    Kuo P, Saibua S, Huang G, et al. An efficient method for evaluating analog circuit performance bounds under process variations. IEEE Trans Circ Syst II, 2012, 59: 351–355

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Correspondence to Guanming Huang.

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Huang, G., Gillin, D., Zhou, D. et al. An efficient and robust method to determine the optimal tap coefficients of high speed FIR equalizer. Sci. China Inf. Sci. 60, 022401 (2017). https://doi.org/10.1007/s11432-015-0967-7

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Keywords

  • tap coefficients
  • global optimization
  • multi-start point
  • eye diagram
  • Monte Carlo method