A Trace-Back Method with Source States for Viterbi Decoding of Rate-1/n Convolutional Codes

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概要

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• The Viterbi algorithm is widely used for decoding of the convolutional codes. The trace-back method is preferable to the register exchange method because of lower power consumption especially for convolutional codes with many states. A drawback of the conventional trace-back is that it generally requires long latency to obtain the decoded data. In this paper, a method of the trace-back with source states instead of decision bits is proposed which reduces the number of memory accesses. The dedicated memory is also presented which supports the proposed trace-back method. The reduced memory accesses result in smaller power consumption and a shorer decode latency than the conventional method.

• The Institute of Electronics, Information and Communication Engineersの論文
• 2012-04-01

著者

• Ito Kazuhito

  Graduate School Of Science And Engineering Saitama University

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