Title :
Information theoretic limits on communication over multipath fading channels
Author_Institution :
Commun. Res. Centre, Ottawa, Ont., Canada
Abstract :
Limits on the rate of reliable communication over multipath fading channels are presented. An idealized channel model is considered first in order to determine the loss due to amplitude fading. The requirement of channel estimation is demonstrated through calculation of limits for channels in which the state of the fading process is not completely known. Loss incurred due to the limitation of practical channel estimation schemes is determined. The particular methods of channel estimation considered are pilot tone extraction, differentially coherent detection, and the use of a pilot symbol
Keywords :
channel capacity; demodulation; estimation theory; fading; information theory; losses; multipath channels; signal detection; amplitude fading; channel capacity; channel estimation; communication; differentially coherent detection; idealized channel model; information theoretic limits; loss; multipath fading channels; pilot symbol; pilot tone extraction; practical channel estimation; Additive white noise; Ambient intelligence; Constellation diagram; Diversity reception; Entropy; Fading; Frequency estimation; Rayleigh channels; Rician channels; Upper bound;
Conference_Titel :
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location :
Whistler, BC
Print_ISBN :
0-7803-2453-6
DOI :
10.1109/ISIT.1995.531355
