Low-power active interference cancellation for OFDM spectrum sculpting

Jorge F. Schmidt, Daniel Romero, Roberto López-Valcarce

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

Abstract

We present a low-power design for Active Interference Cancellation (AIC) sculpting of the OFDM spectrum, based on sparse design concepts. Optimal AIC designs compute cancellation weights based on contributions from all data subcarriers. Thus, as the number of subcarriers grows, power consumption becomes a concern, and suboptimal solutions that avoid involving all subcarriers are of interest. In this context, we present novel sparse AIC designs based on a zeronorm minimization of the matrix defining the cancellation weights. These designs drastically reduce the number of operations per symbol, and thus the power consumption, while allowing to tune the loss with respect the optimal design. They can be efficiently obtained and significantly outperform usual thresholding or sparsity-inducing 1-norm minimization approaches.

Original languageEnglish (US)
Title of host publication2014 Proceedings of the 22nd European Signal Processing Conference, EUSIPCO 2014
PublisherEuropean Signal Processing Conference, EUSIPCO
Pages581-585
Number of pages5
ISBN (Electronic)9780992862619
StatePublished - Nov 10 2014
Externally publishedYes
Event22nd European Signal Processing Conference, EUSIPCO 2014 - Lisbon, Portugal
Duration: Sep 1 2014Sep 5 2014

Publication series

NameEuropean Signal Processing Conference
ISSN (Print)2219-5491

Other

Other22nd European Signal Processing Conference, EUSIPCO 2014
Country/TerritoryPortugal
CityLisbon
Period9/1/149/5/14

Bibliographical note

Publisher Copyright:
© 2014 EURASIP.

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