DocumentCode :
112980
Title :
The Capacity of Known Interference Channel
Author :
Shengli Zhang ; Soung-Chang Liew ; Jinyuan Chen
Author_Institution :
Shenzhen MCSP Key Lab., Shenzhen Univ., Shenzhen, China
Volume :
33
Issue :
6
fYear :
2015
fDate :
Jun-15
Firstpage :
1241
Lastpage :
1252
Abstract :
In this paper, we investigate the capacity of a known interference channel, where a transmitter sends information to a receiver in the presence of a block-fading interference link, and the receiver knows the interference data but not the channel gain of the interference link. An upper bound and a lower bound for the capacity of this known interference channel are derived. Specifically, the capacity lower bound is achieved by a blind known interference cancellation (BKIC) scheme, which can remove the interference without the knowledge of the interference channel gain. We further show that the achievable lower bound of BKIC can approach the upper bound in high SNR regime. Our results show that the lack of the knowledge of the channel gain of the interfering link causes only a small fractional loss of degrees of freedom (capacity prelog).
Keywords :
channel capacity; fading channels; interference suppression; radio links; radio receivers; radio transmitters; radiofrequency interference; BKIC scheme; blind known interference cancellation scheme; block-fading interference link; degrees of freedom; fractional loss; known interference channel capacity; lower bound; receiver; transmitter; upper bound; Interference channels; Receivers; Signal to noise ratio; Transmitters; Upper bound; Vectors; Interference cancellation; MIMO; channel capacity; channel state information; interference channels;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/JSAC.2015.2417015
Filename :
7067412
Link To Document :
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