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.
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页数：13
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