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首页> 外文期刊>IEEE Transactions on Information Theory >Sequence estimation and synchronization from nonsynchronized samples
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Sequence estimation and synchronization from nonsynchronized samples

机译：来自非同步样本的序列估计和同步

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The authors study the problem of maximum-likelihood sequence estimation and synchronization from samples of the output of a matched filter taken at integer multiples of the symbol rate, which is assumed perfectly known by the receiver. A general analysis is presented of sampled receivers that handle arbitrary baseband pulse shapes and arbitrary sampling rates. It is observed that the optimal processing of the matched-filter samples consists of digital interpolation, followed by symbol-by-symbol decoding when sampling is at (or above) the Nyquist rate or Viterbi decoding when sampling is below the Nyquist rate. Performance is studied through the Cramer-Rao bound on mean-square estimation error and a lower-bound on error-probability.
机译：作者研究了以符号率的整数倍获取的匹配滤波器输出样本的最大似然序列估计和同步问题，这是接收机完全已知的。对处理任意基带脉冲形状和任意采样率的采样接收机进行了一般分析。可以看出，对匹配滤波器样本的最佳处理包括数字内插，然后在采样速率为（或高于）奈奎斯特速率时进行逐符号解码，或者在采样速率低于奈奎斯特速率时进行维特比解码。通过均方根估计误差的Cramer-Rao界和误差概率的下界来研究性能。

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