Modified Joint Source-Channel Trellises for Transmitting JPEG Images over Wireless Networks

被引：0

作者：

Lin, Yin-Chen ^{[1
]}

Wang, Jyun-Jie ^{[2
]}

Yang, Sheng-Chih ^{[1
,2
]}

Chen, Chi-Chun ^{[1
,3
]}

机构：

[1] Natl Chin Yi Univ Technol, Grad Inst, Prospective Technol Elect Engn & Comp Sci, Taichung 41170, Taiwan

[2] Natl Chin Yi Univ Technol, Dept Comp Sci & Informat Engn, Taichung 41170, Taiwan

[3] Natl Chin Yi Univ Technol, Dept Elect Engn, Taichung 41170, Taiwan

来源：

APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 06期

关键词：

trellis; decoding algorithm; block codes; BCJR; TRANSMISSION;

D O I：

10.3390/app14062578

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper presents a joint source-channel image transmission model based on a modified trellis construction using variable-length and fixed-length codes. The model employs linear block trellis codes and a modified Bahl-Cocke-Jelinek-Raviv algorithm for decoding in the source channel. Additionally, this model utilizes a hierarchical tree and a parity-check matrix to combine the source and channel codes, reducing errors in the decoding process and enabling the decoding of longer sequences without substantial loss of quality.

引用

页数：13

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