An information-spectrum approach to the capacity region of general interference channel
- Resource Type
- Conference
- Authors
- Lin, Lei; Ma, Xiao; Huang, Xiujie; Bai, Baoming
- Source
- 2012 IEEE International Symposium on Information Theory Proceedings Information Theory Proceedings (ISIT), 2012 IEEE International Symposium on. :2261-2265 Jul, 2012
- Subject
- Computing and Processing
Communication, Networking and Broadcast Technologies
Interference channels
Manganese
Decoding
Integrated circuits
Receivers
Information rates
- Language
- ISSN
- 2157-8095
2157-8117
This paper is concerned with general interference channels characterized by a sequence of transition (conditional) probabilities. We present a general formula for the capacity region of the interference channel with two pairs of users. The formula shows that the capacity region is the union of a family of rectangles, where each rectangle is determined by a pair of spectral inf-mutual information rates. Although the presented formula is usually difficult to compute, it provides us useful insights into the interference channels. For example, the formula suggests us that the simplest inner bounds (obtained by treating the interference as noise) could be improved by taking into account the structure of the interference processes. This is verified numerically by computing the mutual information rates for Gaussian interference channels with embedded convolutional codes.