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IEICE TRANSACTIONS on Communications

An Improved Encoder for Joint Source-Channel Decoder Using Conditional Entropy Constraint

Moonseo PARK, Seong-Lyun KIM

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Summary :

When the joint source-channel (JSC) decoder is used for source coding over noisy channels, the JSC decoder may invent errors even though the received data is not corrupted by the channel noise, if the JSC decoder assumes the channel was noisy. A novel encoder algorithm has been recently proposed to improve the performance of the communications system under this situation. In this letter, we propose another algorithm based on conditional entropy-constrained vector quantizer to further improve the encoder. The algorithm proposed in this letter significantly improves the performance of the communications system when the hypothesized channel bit error rate is high.

Publication
IEICE TRANSACTIONS on Communications Vol.E92-B No.6 pp.2222-2225
Publication Date
2009/06/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E92.B.2222
Type of Manuscript
LETTER
Category
Fundamental Theories for Communications

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