在维特比译码器译码时，应用信道状态信息(CSI)，可以明显提高系统性能。
The performance can be improved greatly by using the channel state information (CSI) in Viterbi decoder.
维特比译码器（81）通过更改后的维特比算法对接收符号（50）进行译码。
The Viterbi decoder (81) decodes the received symbols (50) by means of a modified Viterbi algorithm.
减阶单元(80)使用该附加信息将维特比译码器(81)进行的译码限制为特定的后续阶。
The stage reduction unit (80) USES the additional information to limit the decoding by the Viterbi decoder (81) to certain subsequent stages.
减阶单元(80)使用该附加信息将维特比译码器(81)进行的译码限制为特定的后续阶。
The stage reduction unit (80) USES the additional information to limit the decoding by the Viterbi decoder (81) to certain subsequent stages.
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