Shannon-Kotel'nikov mappings in joint source-channel coding
IEEE Transactions on Communications
Hybrid digital-analog coding with bandwidth compression for Gaussian source-channel pairs
IEEE Transactions on Communications
Hybrid digital-analog relaying for cooperative transmission over slow fading channels
IEEE Transactions on Information Theory
Asymptotically optimal joint source-channel coding with minimal delay
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Comparison of practical feedback algorithms for multiuser MIMO
IEEE Transactions on Communications
Cactus: a hybrid digital-analog wireless video communication system
Proceedings of the 16th ACM international conference on Modeling, analysis & simulation of wireless and mobile systems
| Hi-index | 754.90 |
A joint source-channel hybrid digital-analog (HDA) vector quantization (VQ) system is presented. The main advantage of the new VQ-based HDA system is that it achieves excellent rate-distortion-capacity performance at the design signal-to-noise ratio (SNR) while maintaining a "graceful improvement" characteristic at higher SNRs. It is demonstrated that, within the HDA framework, the parameters of the system can be optimized using an iterative procedure similar to that of channel-optimized vector quantizer design. Comparisons are made with three purely digital systems and one purely analog system. It is found that, at high SNRs, the VQ-based HDA system is superior to the other investigated systems. At low SNRs, the performance of the new scheme can be improved using the optimization procedure and using soft decoding in the digital part of the system. These results demonstrate that the introduced scheme provides an attractive method for terrestrial broadcasting applications