Computer Science – Information Theory
Scientific paper
2007-02-07
Computer Science
Information Theory
Scientific paper
The capacity of the two-user Gaussian interference channel has been open for thirty years. The understanding on this problem has been limited. The best known achievable region is due to Han-Kobayashi but its characterization is very complicated. It is also not known how tight the existing outer bounds are. In this work, we show that the existing outer bounds can in fact be arbitrarily loose in some parameter ranges, and by deriving new outer bounds, we show that a simplified Han-Kobayashi type scheme can achieve to within a single bit the capacity for all values of the channel parameters. We also show that the scheme is asymptotically optimal at certain high SNR regimes. Using our results, we provide a natural generalization of the point-to-point classical notion of degrees of freedom to interference-limited scenarios.
Etkin Raul
Tse David
Wang Hua
No associations
LandOfFree
Gaussian Interference Channel Capacity to Within One Bit does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gaussian Interference Channel Capacity to Within One Bit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gaussian Interference Channel Capacity to Within One Bit will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-432682