Hybrid digital-analog coding with bandwidth compression for Gaussian source-channel pairs
IEEE Transactions on Communications
On source transmission over MIMO channels with limited feedback
IEEE Transactions on Signal Processing
Channel state feedback over the MIMO-MAC
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
Distortion minimization in Gaussian layered broadcast coding with successive refinement
IEEE Transactions on Information Theory
Channel state feedback schemes for multiuser MIMO-OFDM downlink
IEEE Transactions on Communications
Hybrid digital-analog relaying for cooperative transmission over slow fading channels
IEEE Transactions on Information Theory
Limits on the robustness of MIMO joint source-channel codes
Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing
Analog source exchange with the help of a relay
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Joint source channel coding with side information using hybrid digital analog codes
IEEE Transactions on Information Theory
On the distortion exponents of layered broadcast transmission in multi-relay cooperative networks
IEEE Transactions on Signal Processing
On optimum end-to-end distortion in MIMO systems
EURASIP Journal on Wireless Communications and Networking
| Hi-index | 755.02 |
We consider the transmission of a real independent and identically distributed (i.i.d.) "analog" source over a quasi-static M-input N-output multiple-input multiple-output (MIMO) block-fading channel. The relevant performance criterion is end-to-end average quadratic distortion D versus channel signal-to-noise ratio (SNR), for given spectral efficiency eta, defined as the ratio of the source bandwidth over the channel bandwidth. In the limit of high SNR, we define the distortion SNR exponent a*(eta) as the largest a such that D esdot snr-a, over all possible source-channel coding schemes of spectral efficiency eta. We find a simple upper bound on a*(eta), an achievable lower bound asep(eta) achievable by separated (tandem) source-channel coding, and a tighter lower bound ahybrid(eta) achievable by new hybrid digital analog space-time coding schemes. As a corollary, we have that a*(eta) is completely determined for the scalar case M = N = 1 and for the "bandwidth compression" case eta ges 2 min{M, N}. Expiicit and simple construction of hybrid space-time codes achieving ahybrid(eta) are also given.