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Interference Alignment and Degrees of Freedom of the K-User Interference Channel.
- Source :
-
IEEE Transactions on Information Theory . Aug2008, Vol. 54 Issue 8, p3425-3441. 17p. - Publication Year :
- 2008
-
Abstract
- For the fully connected K user wireless interference channel where the channel coefficients are time-varying and are drawn from a continuous distribution, the sum capacity is characterized as C(SNR) =K/2 log(SNR) + o(log(SNR)). Thus, the K user time-varying interference channel almost surely has K/2 degrees of freedom. Achievability is based on the idea of interference alignment. Examples are also provided of fully connected K user interference channels with constant (not time-varying) coefficients where the capacity is exactly achieved by interference alignment at all SNR values. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189448
- Volume :
- 54
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Information Theory
- Publication Type :
- Academic Journal
- Accession number :
- 33941766
- Full Text :
- https://doi.org/10.1109/TIT.2008.926344