Results 151 to 160 of about 3,412 (199)

M-JSCC: An Asymmetric Semantic Communication Architecture for 6G Intelligent Networks

2025 IEEE 101st Vehicular Technology Conference (VTC2025-Spring)
Semantic communication (SC) is considered a critical technology for breaking through the Shannon limit and achieving low-latency, high-capacity 6 G transmission.
Pengfei Ren, Jingjing Wang, Zhiwei Wang, Xiangwang Hou, Xin Zhang, Chunxiao Jiang   +5 more
openaire   +2 more sources

Global optimization of double protograph LDPC codes for JSCC scheme

Science China Information Sciences
Qiwang Chen, Chen Chen, Yu-Cheng He, Zhiping Xu   +3 more
openaire   +2 more sources

Enable JSCC-Based CSI Feedback for B5G/6G: Design, Standardization, and Prototype

ICC 2025 - IEEE International Conference on Communications
In modern wireless systems, the process of acquiring channel state information (CSI) has become increasingly important and challenging due to the conflicting needs of expanding antenna arrays and achieving high spectrum efficiency.
Nan Jiang, Younsun Kim, Hang Qi, Yu Xiao, Yupeng Cui, Feifei Sun, Chen Qian, Bin Yu, Chengjun Sun, Hyoung-Ju Ji   +9 more
openaire   +2 more sources

JSCC using bandwidth reducing and expanding mappings

2008 11th IEEE Singapore International Conference on Communication Systems, 2008
A joint source channel coding scheme has been proposed to optimize the mapping vector quantizer (VQ)-modulator symbols. The proposed two-step-algorithm optimizes first the mapping source codes-modulator symbols, and then optimizes VQ against the channel noise. To reach the target codebook size these steps are repeated iteratively.
null Hatem El Meddeb, null Noureddine Hamdi, null Ammar Bouallegue   +2 more
openaire   +1 more source

Joint Component Design for the JSCC System Based on DP-LDPC Codes

IEEE Transactions on Communications, 2020
The joint base matrix ${{{{B}}_{{\mathrm{J}}}}}$ of the joint source-channel coding (JSCC) system based on double protograph low-density parity-check (DP-LDPC) codes consists of four components, namely, the source code ${{{{B}}_{{\mathrm{s}}}}}$ , the
Sanya Liu, Lin Wang, Jun Chen
exaly   +2 more sources

Efficient utilization of bandwidth in JSCC for wireless communication

2008 3rd International Symposium on Communications, Control and Signal Processing, 2008
An adaptive joint source channel coding (JSCC) for image transmission over an additive white Gaussian noise (AWGN) channel is studied in a particular context, that to use the bandwidth effectively, which leads to a robust communication. Such that, the source symbol and the channel symbol possibly have different dimensions, the basic idea is to map ...
Hatem El Meddeb, Hamdi Noureddine, Ammar Bouallegue   +2 more
openaire   +1 more source

Relay based video transmission using JSCC over Rayleigh fading channel

6th International Symposium on Telecommunications (IST), 2012
To rely on data transmission in low bit rate regime, more protection is required against the channel errors. In video communication over such a regime, a robust and reliable system is needed, which adapted itself matching to the variations of the channel. In this paper we propose to employ joint source and channel coding for video transmission to yield
Farid Jafarian, Hassan Farsi
openaire   +1 more source

Quasi-OSD of Binary Image of RS Codes with Applications to JSCC

2024 IEEE International Symposium on Information Theory (ISIT)
We propose quasi ordered statistic decoding (quasi-OSD) of binary image of Reed-Solomon (RS) codes and explore the application of RS codes to joint source-channel coding (JSCC).
Xiangping Zheng, Qianfan Wang, Baodian Wei, Xiao Ma   +3 more
openaire   +2 more sources

Analysis and Improvement of Error-Floor Performance for JSCC Scheme Based on Double Protograph LDPC Codes

IEEE Transactions on Vehicular Technology, 2020
In a joint source-channel coding (JSCC) system, excessive source compression can cause an error floor. In the original JSCC scheme based on double protograph LDPC (DP-LDPC) codes, only connections exist between check nodes (CNs) of the source protograph ...
Qiwang Chen, Francis C M Lau, Huihui Wu
exaly   +2 more sources

JSCC Based on OPTA for Wireless Communication over Flat Fading Channel

2010 7th IEEE Consumer Communications and Networking Conference, 2010
A joint source channel coding scheme using bandwidth reducing has been proposed to optimize the mapping vector quantizer (VQ)-modulator symbols. The proposed two-step-algorithm optimizes first the mapping source codes-modulator symbols, and then optimizes VQ against the channel noise.
Hatem El Meddeb, Noureddine Hamdi, Ammar Bouallegue   +2 more
openaire   +1 more source