Gaussian Interference Networks: Sum Capacity in the Low-Interference Regime and New Outer Bounds on the Capacity Region

Establishing the capacity region of a Gaussian interference network is an open problem in information theory. Recent progress on this problem has led to the characterization of the capacity region of a general two-user Gaussian interference channel within one bit. In this paper, we develop new, impr...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on information theory 2009-07, Vol.55 (7), p.3032-3050
Main Authors: Annapureddy, V.S., Veeravalli, V.V.
Format: Article
Language:English
Subjects:
Additive white noise
Applied sciences
AWGN
Capacity
Channels
Decoding
Exact sciences and technology
Gaussian
Gaussian noise
genie
Information
Information theory
Information, signal and communications theory
Interference
interference channel
Interference channels
Networks
Noise
Noise generators
Noise level
Normal distribution
outer bound
Telecommunications and information theory
Theory
Thresholds
Throughput
treating interference as noise
Wireless networks
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Establishing the capacity region of a Gaussian interference network is an open problem in information theory. Recent progress on this problem has led to the characterization of the capacity region of a general two-user Gaussian interference channel within one bit. In this paper, we develop new, improved outer bounds on the capacity region. Using these bounds, we show that treating interference as noise achieves the sum capacity of the two-user Gaussian interference channel in a low-interference regime , where the interference parameters are below certain thresholds. We then generalize our techniques and results to Gaussian interference networks with more than two users. In particular, we demonstrate that the total interference threshold, below which treating interference as noise achieves the sum capacity, increases with the number of users.
ISSN:0018-9448
1557-9654
DOI:10.1109/TIT.2009.2021380