Channel estimators are usually divided into two kind: decision-feedback estimator and pilot-aided estimator.

信道估计器通常分为两类：判决反馈估计器和导频符号辅助估计器。

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Moreover, analyses and contrasts the difference of performance between linear equalization and decision-feedback equalization.

并且根据结果分析比较利用两者均衡后的性能差异。

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For the FMT system, a decision-aided equalizer could overcome the floor effect of the decision feedback equalizer which is caused by the multi-path channel.

提出的辅助判决均衡器在用于滤波多音调制系统时，可克服判决反馈均衡器在多径信道下的地板效应。

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Argyris described a method for improving the thinking and decision-making of executive groups that involved engaging them both collectively and individually as a coach-facilitator, giving them feedback, challenging their thinking and using focused exercises to help them reflect on how they operate.

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Sunstein argue that a lack of feedback on activities like pollution ensures the continuation of harmful decision-making.

FORBES: Can Behavioral Economics Jump-start Green Leadership?