Generalized Performance Upper Bounds for Terminated Convolutional Codes

Hichan MOON, Donald C. COX

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Summary :

In this paper, we propose tight performance upper bounds for convolutional codes terminated with an input sequence of finite length. To obtain the upper bounds, a generalized weight enumerator of single error event is defined to represent the relation between the Hamming distance of the coded output and the Hamming distance of the selected input bits of a terminated convolutional code. In the generalized weight enumerator of single error event, codewords composed of multiple error events are not counted to provide tighter performance upper bounds. The upper bounds on frame error rate (FER) and average bit error rate (BER) of selected bits are computed from the generalized weight enumerators of single error event. A simple method is presented to compute the weight enumerator of a terminated convolutional code based on a modified trellis diagram.

Publication
IEICE TRANSACTIONS on Communications Vol.E90-B No.6 pp.1360-1366
Publication Date
2007/06/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e90-b.6.1360
Type of Manuscript
PAPER
Category
Fundamental Theories for Communications

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