Low-complexity blind equalization for OFDM systems with general constellations

Handle URI:
http://hdl.handle.net/10754/562447
Title:
Low-complexity blind equalization for OFDM systems with general constellations
Authors:
Al-Naffouri, Tareq Y.; Dahman, Ala A.; Sohail, Muhammad Sadiq; Xu, Weiyu; Hassibi, Babak
Abstract:
This paper proposes a low-complexity algorithm for blind equalization of data in orthogonal frequency division multiplexing (OFDM)-based wireless systems with general constellations. The proposed algorithm is able to recover the transmitted data even when the channel changes on a symbol-by-symbol basis, making it suitable for fast fading channels. The proposed algorithm does not require any statistical information about the channel and thus does not suffer from latency normally associated with blind methods. The paper demonstrates how to reduce the complexity of the algorithm, which becomes especially low at high signal-to-noise ratio (SNR). Specifically, it is shown that in the high SNR regime, the number of operations is of the order O(LN), where L is the cyclic prefix length and N is the total number of subcarriers. Simulation results confirm the favorable performance of the proposed algorithm. © 2012 IEEE.
KAUST Department:
Electrical Engineering Program
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Transactions on Signal Processing
Issue Date:
Dec-2012
DOI:
10.1109/TSP.2012.2218808
ARXIV:
arXiv:1207.2546
Type:
Article
ISSN:
1053587X
Sponsors:
Manuscript received March 05, 2012; revised July 09, 2012; accepted August 28, 2012. Date of publication September 13, 2012; date of current version November 20, 2012. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Tong Zhang. This work was supported by a grant from the Deanship of Scientific Research (DSR) at King Fahd University of Petroleum & Minerals (KFUPM) under project No. FT111004.
Additional Links:
http://arxiv.org/abs/arXiv:1207.2546v1
Appears in Collections:
Articles; Electrical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorAl-Naffouri, Tareq Y.en
dc.contributor.authorDahman, Ala A.en
dc.contributor.authorSohail, Muhammad Sadiqen
dc.contributor.authorXu, Weiyuen
dc.contributor.authorHassibi, Babaken
dc.date.accessioned2015-08-03T10:38:31Zen
dc.date.available2015-08-03T10:38:31Zen
dc.date.issued2012-12en
dc.identifier.issn1053587Xen
dc.identifier.doi10.1109/TSP.2012.2218808en
dc.identifier.urihttp://hdl.handle.net/10754/562447en
dc.description.abstractThis paper proposes a low-complexity algorithm for blind equalization of data in orthogonal frequency division multiplexing (OFDM)-based wireless systems with general constellations. The proposed algorithm is able to recover the transmitted data even when the channel changes on a symbol-by-symbol basis, making it suitable for fast fading channels. The proposed algorithm does not require any statistical information about the channel and thus does not suffer from latency normally associated with blind methods. The paper demonstrates how to reduce the complexity of the algorithm, which becomes especially low at high signal-to-noise ratio (SNR). Specifically, it is shown that in the high SNR regime, the number of operations is of the order O(LN), where L is the cyclic prefix length and N is the total number of subcarriers. Simulation results confirm the favorable performance of the proposed algorithm. © 2012 IEEE.en
dc.description.sponsorshipManuscript received March 05, 2012; revised July 09, 2012; accepted August 28, 2012. Date of publication September 13, 2012; date of current version November 20, 2012. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Tong Zhang. This work was supported by a grant from the Deanship of Scientific Research (DSR) at King Fahd University of Petroleum & Minerals (KFUPM) under project No. FT111004.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.urlhttp://arxiv.org/abs/arXiv:1207.2546v1en
dc.subjectChannel estimationen
dc.subjectmaximum a posteriori detectionen
dc.subjectmaximum-likelihood detectionen
dc.subjectOFDM and recursive least squaresen
dc.titleLow-complexity blind equalization for OFDM systems with general constellationsen
dc.typeArticleen
dc.contributor.departmentElectrical Engineering Programen
dc.identifier.journalIEEE Transactions on Signal Processingen
dc.contributor.institutionElectrical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabiaen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Iowa, Iowa City, IA 52242, United Statesen
dc.contributor.institutionDepartment of Electrical Engineering, California Institute of Technology, Pasadena, CA 91125, United Statesen
dc.identifier.arxividarXiv:1207.2546en
kaust.authorAl-Naffouri, Tareq Y.en
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