Results 41 to 50 of about 6,409,844 (151)

Flexible Macroblock Ordering for Context‐Aware Ultrasound Video Transmission over Mobile WiMAX

International Journal of Telemedicine and Applications, Volume 2010, Issue 1, 2010., 2010
The most recent network technologies are enabling a variety of new applications, thanks to the provision of increased bandwidth and better management of Quality of Service. Nevertheless, telemedical services involving multimedia data are still lagging behind, due to the concern of the end users, that is, clinicians and also patients, about the low ...
Maria G. Martini, Chaminda T. E. R. Hewage, Tasos Dagiuklas   +2 more
wiley   +1 more source

Joint source and turbo trellis coded hierarchical modulation for context-aware medical image transmission [PDF]

, 2013
An iterative Joint Source and Turbo Trellis Coded Hierarchical Modulation is introduced for robust context-aware medical image transmission. Lossless source compression as well as Quality of Service (QoS) might be considered as the main constraints in ...
Abdulah Jeza Aljohani, Soon Xin Ng, Aljohani, Abdulah Jeza, Ng, Soon Xin, Hanzo, Lajos, Hua Sun, Lajos Hanzo, Sun, Hua   +7 more
core   +1 more source

D²-JSCC: Digital Deep Joint Source-channel Coding for Semantic Communications

2024 IEEE 35th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Semantic communications (SemCom) have emerged as a new paradigm for supporting sixth-generation applications, where semantic features of data are transmitted using artificial intelligence algorithms to attain high communication efficiencies. Most existing SemCom techniques utilize deep neural networks (DNNs) to implement analog source-channel mappings,
Jianhao Huang 0002, Kai Yuan, Chuan Huang 0001, Kaibin Huang   +3 more
openaire   +3 more sources

An Adaptive Source‐Channel Coding with Feedback for Progressive Transmission of Medical Images

International Journal of Telemedicine and Applications, Volume 2009, Issue 1, 2009., 2009
A novel adaptive source‐channel coding with feedback for progressive transmission of medical images is proposed here. In the source coding part, the transmission starts from the region of interest (RoI). The parity length in the channel code varies with respect to both the proximity of the image subblock to the RoI and the channel noise, which is ...
Jen-Lung Lo, Saeid Sanei, Kianoush Nazarpour, Hui Chen   +3 more
wiley   +1 more source

Joint Source-Channel Coding System for 6G Communication: Design, Prototype and Future Directions

IEEE Access
The emergence of the AI era signifies a shift in the future landscape of global communication networks, wherein robots are expected to play a more prominent role compared to humans.
Xinchao Zhong, Chiu-Wing Sham, Sean Longyu Ma, Hong-Fu Chou, Arsham Mostaani, Thang X. Vu, Symeon Chatzinotas   +6 more
doaj   +1 more source

Scene‐Driven Semantic Alignment for Generative Communication in Underwater Images

IET Signal Processing, Volume 2026, Issue 1, 2026.
Underwater images serve as one of the most intuitive media for human perception of underwater environments. However, the limited bandwidth and susceptibility to noise in underwater acoustic (UWA) channels pose significant challenges for traditional image encoding and transmission methods, thereby hindering high‐quality image reconstruction.
Yuetong Li, Zhenyu Jia, Yuyang Peng, Yi Zhu, Fei Yuan, Li Chai   +5 more
wiley   +1 more source

Lossy Joint Source‐Channel Coding Using Raptor Codes

International Journal of Digital Multimedia Broadcasting, Volume 2008, Issue 1, 2008., 2008
The straightforward application of Shannon′s separation principle may entail a significant suboptimality in practical systems with limited coding delay and complexity. This is particularly evident when the lossy source code is based on entropy‐coded quantization. In fact, it is well known that entropy coding is not robust to residual channel errors. In
O. Y. Bursalioglu, M. Fresia, G. Caire, H. V. Poor, Massimiliano Laddomada   +4 more
wiley   +1 more source

Deep Learning‐Driven Semantic Communication With Attention Modules

IET Communications, Volume 19, Issue 1, January/December 2025.
In this study, an innovative architecture is proposed to enhance the performance of semantic communication networks by leveraging deep learning and Joint Source‐Channel Coding. A fundamental challenge in this field is the strong dependence of conventional networks on a fixed Signal‐to‐Noise Ratio (SNR) during training, which leads to performance ...
Zahra Mohammadi, Mohammad Ali Amirabadi, Mohammad Hossein Kahaei   +2 more
wiley   +1 more source

Energy‐Constrained Quality Optimization for Secure Image Transmission in Wireless Sensor Networks

Advances in Multimedia, Volume 2007, Issue 1, 2007., 2007
Resource allocation for multimedia selective encryption and energy efficient transmission has not been fully investigated in literature for wireless sensor networks (WSNs). In this article, we propose a new cross‐layer approach to optimize selectively encrypted image transmission quality in WSNs with strict energy constraint.
Wei Wang, Dongming Peng, Honggang Wang, Hamid Sharif, Hsiao-Hwa Chen, Tasos Dagiuklas   +5 more
wiley   +1 more source

Joint Source Coding, Unity Rate Precoding and FFH-MFSK Modulation using Iteratively Decoded Irregular Variable Length Coding

, 2007
Serially concatenated and iteratively decoded Irregular Variable Length Coding (IrVLC) combined with precoded Fast Frequency Hopping (FFH) M-ary Frequency Shift Keying (MFSK) is considered.
Ahmed, S., Lie-Liang Yang, Robert G. Maunder, Soon Xin Ng, Ng, S. X., Yang, L-L., Hanzo, L., Lajos Hanzo, Maunder, R. G., Sohail Ahmed   +9 more
core   +1 more source