Title :
Sum Capacity of One-Sided Parallel Gaussian Interference Channels
Author :
Sung, ChiWan ; Lui, KennethW K. ; Shum, KennethW ; So, H.C.
Author_Institution :
City Univ. of Hong Kong, Hong Kong
Abstract :
The sum capacity of the one-sided parallel Gaussian interference channel is shown to be a concave function of user powers. Exploiting the inherent structure of the problem, we construct a numerical algorithm to compute it. Two suboptimal schemes are compared with the capacity-achieving scheme. One of the suboptimal schemes, namely iterative waterfilling, yields close-to-capacity performance when the cross link gain is small.
Keywords :
Gaussian channels; channel capacity; interference; iterative methods; concave function; iterative waterfilling scheme; one-sided parallel Gaussian interference channel; sum channel capacity; Channel capacity; Degradation; Frequency; Gaussian noise; Integrated circuit modeling; Interference channels; Iterative algorithms; Iterative methods; Performance evaluation; Performance gain; Gaussian interference channels; iterative waterfilling; sum capacity;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2007.911178
