一種基于二次規(guī)劃計(jì)算DFE系數(shù)的新方法
A Novel Method for Calculating the DFE Coefficients Based on Quadratic Programming
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摘要: 判決反饋均衡器(DFE)是一種常見(jiàn)的均衡器類型，在實(shí)際中得到了廣泛應(yīng)用。對(duì)于采用最小均方誤差(MMSE)準(zhǔn)則設(shè)計(jì)的DFE，其系數(shù)計(jì)算一般利用正交原理推導(dǎo)獲得。該文推導(dǎo)了一種新穎的基于二次規(guī)劃方法計(jì)算MMSE準(zhǔn)則下DFE系數(shù)的方法。仿真表明，該文所提方法與傳統(tǒng)方法計(jì)算得到的結(jié)果是一致的，并且由于運(yùn)用矩陣運(yùn)算，在一定程度上簡(jiǎn)化了計(jì)算。Abstract: Decision Feedback Equalizer (DFE) is widely used in practice, which is usually designed according to Minimum Mean Square Error (MMSE) criterion. A novel method is derived for calculating the DFE coefficients based on quadratic programming. Simulations show that the new method is equal to the traditional one.
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Proakis G. Digital Communications[M]. Third Edition, McGrawHill Inc., 1995:621 - 628.[2]陳景良,陳向暉.特殊矩陣[M].北京:清華大學(xué)出版社,2001,420-422.[3]Johnson C R, Schniter P, et al.. Blind equalization using the constant modulus criterion: A Review[J].Proc. IEEE.1998,86(10):1927-[4]Avriel M. Nonlinear Programming: Analysis and Methods[M].Prentice-Hall, Inc., 1976, Ch7. -
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