具有凹特性的新盲均衡準(zhǔn)則
A NOVEL BLIND EQUALIZATION CRITERION WITH CONVEXNESS
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摘要: 本文對于通信信道提出了一種新的盲均衡準(zhǔn)則。該準(zhǔn)則或價值函數(shù)是關(guān)于均衡器抽頭權(quán)矢量和誤差概率的嚴(yán)格凹函數(shù)。本文證明了使用梯度算法,新價值函數(shù)的全局收斂性能得到保證。分析和計算機(jī)模擬結(jié)果表明,本文提出的準(zhǔn)則,無論在計算復(fù)雜度上,還是在收斂速度上,都具有優(yōu)越的性能。
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關(guān)鍵詞:
- 盲均衡; 凹特性; 價值函數(shù)
Abstract: A novel criterion of blind equalization is introduced for communication channels. The criterion or cost-function with respect to the complex tap-weight vector of the equalizer and to the error probability is strictly a convex function. By using gradient algorithm, the global convergence of the cost-function can be guaranteed. Analysis and simulation results demonstrate that the proposed criterion performs very well on both the computational complexity and the convergence rate. -
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