Interference alignment and spatial degrees of freedom for the K user interference channel

Viveck R. Cadambe, Syed A. Jafar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

104 Citations (Scopus)

Abstract

We show that the sum capacity of the K user frequency selective (or time-varying) interference channel is C(SNR) = (K/2) log(SNR)+o(log(SNR)) meaning that the channel has a total of K/2 degrees of freedom per orthogonal time and frequency dimension. Linear schemes of interference alignment and zero forcing suffice to achieve all the degrees of freedom and multi-user detection is not required.

Original languageEnglish (US)
Title of host publicationICC 2008 - IEEE International Conference on Communications, Proceedings
Pages971-975
Number of pages5
DOIs
StatePublished - Sep 12 2008
EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
Duration: May 19 2008May 23 2008

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Other

OtherIEEE International Conference on Communications, ICC 2008
CountryChina
CityBeijing
Period5/19/085/23/08

Fingerprint

Multiuser detection

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Cadambe, V. R., & Jafar, S. A. (2008). Interference alignment and spatial degrees of freedom for the K user interference channel. In ICC 2008 - IEEE International Conference on Communications, Proceedings (pp. 971-975). [4533226] (IEEE International Conference on Communications). https://doi.org/10.1109/ICC.2008.190
Cadambe, Viveck R. ; Jafar, Syed A. / Interference alignment and spatial degrees of freedom for the K user interference channel. ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. pp. 971-975 (IEEE International Conference on Communications).
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Cadambe, VR & Jafar, SA 2008, Interference alignment and spatial degrees of freedom for the K user interference channel. in ICC 2008 - IEEE International Conference on Communications, Proceedings., 4533226, IEEE International Conference on Communications, pp. 971-975, IEEE International Conference on Communications, ICC 2008, Beijing, China, 5/19/08. https://doi.org/10.1109/ICC.2008.190

Interference alignment and spatial degrees of freedom for the K user interference channel. / Cadambe, Viveck R.; Jafar, Syed A.

ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. p. 971-975 4533226 (IEEE International Conference on Communications).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Cadambe VR, Jafar SA. Interference alignment and spatial degrees of freedom for the K user interference channel. In ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. p. 971-975. 4533226. (IEEE International Conference on Communications). https://doi.org/10.1109/ICC.2008.190