DocumentCode :
2661691
Title :
Comparison of fading channel capacity under different CSI assumptions
Author :
Alouini, Mohamed-Slim ; Goldsmith, Andrea J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
Volume :
4
fYear :
2000
fDate :
2000
Firstpage :
1844
Abstract :
This paper explores the relationship between the ergodic fading channel capacity with transmitter and receiver channel state information (CSI), the ergodic fading channel capacity with receiver CSI only, and the zero outage capacity. In particular, we obtain general order relations for these different capacity definitions and also compare them to the capacity of an additive white Gaussian noise channel (AWGN) channel with the same average signal-to-noise ratio (SNR). We determine conditions under which transmitter CSI significantly increases ergodic capacity, and we show that the ergodic capacity of a fading channel can exceed the capacity of an AWGN channel with the same average SNR. We also discuss the relative difference between the capacity of fading channels with transmitter and receiver CSI versus the capacity with receiver CSI only. We show that while this difference is negligible on a Nakagami fading channel it might be relatively significant on a two-state Nakagami fading channel. We also discuss the implications of this work for practical coding schemes
Keywords :
AWGN channels; channel capacity; channel coding; fading channels; receivers; transmitters; AWGN channel; CSI assumptions; Nakagami fading channel; additive white Gaussian noise channel channel; average signal-to-noise ratio; channel state information; coding schemes; ergodic capacity; ergodic fading channel capacity; fading channel capacity; general order relations; receiver; transmitter; two-state Nakagami fading channel; zero outage capacity; AWGN channels; Additive white noise; Channel capacity; Channel state information; Delay; Fading; Information rates; Postal services; Signal to noise ratio; Transmitters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
ISSN :
1090-3038
Print_ISBN :
0-7803-6507-0
Type :
conf
DOI :
10.1109/VETECF.2000.886138
Filename :
886138
Link To Document :
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