An Improved One-Pointer Traceback Method

Shang-Chih MA  

IEICE TRANSACTIONS on Communications   Vol.E87-B   No.4   pp.1016-1018
Publication Date: 2004/04/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Communication Devices/Circuits
traceback scheme,  one-pointer method,  single-port memory,  

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Traceback schemes used in Viterbi decoders can be categorized into multi-pointer and one-pointer methods. A traceback scheme using one-pointer method has been shown to be better than the one using multi-pointer method in terms of memory size and latency. We propose an area efficient traceback method which is based on the one-pointer scheme. The proposed method can be implemented by using only two single-port memory banks. In comparison with traditional methods, lower power consumption and smaller area occupation are required for the proposed method.