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Power Control in Wireless Interference Networks with Limited Feedback
KTH, School of Electrical Engineering (EES), Communication Theory.
KTH, School of Electrical Engineering (EES), Communication Theory.
KTH, School of Electrical Engineering (EES), Communication Theory.ORCID iD: 0000-0002-7926-5081
2012 (English)In: International Symposium on Wireless Communication Systems (ISWCS), 2012, IEEE conference proceedings, 2012, 671-675 p.Conference paper, Presentation (Refereed)
Abstract [en]

This paper addresses a power control problem in a wireless time-varying K-user interference network. Each transmitter intends to communicate to its desired receiver at afixed rate. Quantized channel gains are globally available through limited feedback signals. To eliminate multi-user interference, interference alignment scheme is performed based on the imperfect channel knowledge. The communication quality is affected by the channel quantization errors and interference leakage. We proposea power control algorithm, aiming to guarantee successful transmissions of each user while minimizing the transmission powerof the network. Our results show that even with limited number of feedback bits, by performing power control the considered interference alignment scheme can outperform the conventional time-division-multiple-access scheme.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2012. 671-675 p.
Keyword [en]
Interference alignment, power control, wireless communication, feedback
National Category
Communication Systems Telecommunications Signal Processing
Research subject
URN: urn:nbn:se:kth:diva-104482DOI: 10.1109/ISWCS.2012.6328452ScopusID: 2-s2.0-84871347570ISBN: 978-1-4673-0760-4OAI: diva2:564922
International Symposium on Wireless Communication Systems (ISWCS'12), Paris, France, August 28-31, 2012
ICT - The Next Generation

QC 20121114

Available from: 2012-11-14 Created: 2012-11-05 Last updated: 2015-03-04Bibliographically approved

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