Rate optimization to minimize distortion for source-channel coded H-BLAST with SIC decoding
IEEE Communications Letters
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 exponents for decode-and-forward multi-relay cooperative networks
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
An enhanced V-BLAST MIMO system using joint source and channel coding
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 1
Layered video multicast using diversity embedded space time codes
SARNOFF'09 Proceedings of the 32nd international conference on Sarnoff symposium
Distortion minimization in Gaussian layered broadcast coding with successive refinement
IEEE Transactions on Information Theory
Distortion exponent for multiple description coding
Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing
Secure joint source-channel coding for quasi-static fading channels
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
The effect of fading correlation on average source MMSE distortion
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Generalizing capacity: new definitions and capacity theorems for composite channels
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 | 754.96 |
We consider transmission of a continuous amplitude source over an L-block Rayleigh-fading Mt x Mr multiple-input multiple-output (MIMO) channel when the channel state information is only available at the receiver. Since the channel is not ergodic, Shannon's source-channel separation theorem becomes obsolete and the optimal performance requires a joint source-channel approach. Our goal is to minimize the expected end-to-end distortion, particularly in the high signal-to-noise ratio (SNR) regime. The figure of merit is the distortion exponent, defined as the exponential decay rate of the expected distortion with increasing SNR. We provide an upper bound and lower bounds for the distortion exponent with respect to the bandwidth ratio among the channel and source bandwidths. For the lower bounds, we analyze three different strategies based on layered source coding concatenated with progressive superposition or hybrid digital/analog transmission. In each case, by adjusting the system parameters we optimize the distortion exponent as a function of the bandwidth ratio. We prove that the distortion exponent upper bound can be achieved when the channel has only one degree of freedom, that is L = 1, and min{Mt ,Mr} =1. When we have more degrees of freedom, our achievable distortion exponents meet the upper bound for only certain ranges of the bandwidth ratio. We demonstrate that our results, which were derived for a complex Gaussian source, can be extended to more general source distributions as well.