DocumentCode
1847189
Title
The effect of channel variations upon capacity
Author
Medard, Muriel ; Gallager, Robert G.
Author_Institution
MIT, Cambridge, MA, USA
Volume
3
fYear
1996
fDate
28 Apr-1 May 1996
Firstpage
1781
Abstract
The capacity of wireless systems depends critically on the variations of the channels. The effect of the channel variations is twofold: it creates fading and it precludes exact measurement of the channel. We study the second effect. We establish bounds for the loss in mutual information due to not knowing the channel at the receiver for the single and multiple user case. We relate the Doppler spread and the time spread to the loss in capacity due to the inability to measure exactly a changing channel
Keywords
Doppler effect; channel capacity; radiocommunication; time-varying channels; Doppler spread; channel capacity; channel measurement; channel variations; fading; multiple user; mutual information loss; receiver channel; single user; time varying channel; wireless systems; Channel capacity; Fading; Frequency; Loss measurement; Multipath channels; Mutual information; Region 2; Sampling methods; Time measurement; Time-varying channels;
fLanguage
English
Publisher
ieee
Conference_Titel
Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th
Conference_Location
Atlanta, GA
ISSN
1090-3038
Print_ISBN
0-7803-3157-5
Type
conf
DOI
10.1109/VETEC.1996.504064
Filename
504064
Link To Document