Title :
Capacity of time-varying channels with channel side information
Author :
Medard, Muriel ; Goldsmith, Andrea
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
fDate :
29 Jun-4 Jul 1997
Abstract :
The capacity of a time-varying channel with perfect side information of the channel response at the sender and the receiver is considered. We obtain a formal weak coding theorem which achieves the maximum expected mutual information. For an ISI channel, the input distribution that maximizes this mutual information is shown to be Gaussian conditioned on the past channel values
Keywords :
Gaussian channels; Gaussian distribution; channel capacity; encoding; intersymbol interference; receivers; time-varying channels; AWGN channel; Gaussian conditioned distribution; ISI channel; channel response; channel side information; input distribution; maximum expected mutual information; memory; past channel values; perfect side information; receiver; time-varying channel capacity; weak coding theorem; AWGN; Bandwidth; Channel capacity; Codes; Constraint theory; Laboratories; Mutual information; Sampling methods; Time factors; Time-varying channels;
Conference_Titel :
Information Theory. 1997. Proceedings., 1997 IEEE International Symposium on
Conference_Location :
Ulm
Print_ISBN :
0-7803-3956-8
DOI :
10.1109/ISIT.1997.613309
