RLS-based frequency-domain DFE for uplink SC-FDMA

Naveed Iqbal; Azzedine Zerguine; Naofal Al-Dhahir

doi:10.1109/ACSSC.2014.7094609

RLS-based frequency-domain DFE for uplink SC-FDMA

Naveed Iqbal, Azzedine Zerguine, Naofal Al-Dhahir

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

The decision feedback equalizer is well known to outperform a linear equalizer in highly frequency-selective fading channels. In this paper, we develop a low-complexity Adaptive Frequency Domain Decision Feedback Equalizer (AFD-DFE) for Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems. Both the feedforward and feedback filters operate in the frequency-domain and are adapted using the block Recursive Least Squares (RLS) algorithm. Since this DFE design operation is performed entirely in the frequency-domain, the complexity of the block RLS algorithm can be reduced substantially when compared to its time-domain counterpart by exploiting matrix structure in the frequency-domain. We also show that the RLS-based AFD-DFE not only enjoys a significant reduction in computational complexity when compared to the frequency-domain non-adaptive channel-estimate-based MMSE-DFE but its performance is also better than that of the practical MMSE DFE (with decision errors) and close to the ideal MMSE DFE (with correct decisions).

Original language	English
Title of host publication	Conference Record of the 48th Asilomar Conference on Signals, Systems and Computers
Editors	Michael B. Matthews
Publisher	IEEE Computer Society
Pages	1026-1029
Number of pages	4
ISBN (Electronic)	9781479982974
DOIs	https://doi.org/10.1109/ACSSC.2014.7094609
State	Published - 24 Apr 2015

Publication series

Name	Conference Record - Asilomar Conference on Signals, Systems and Computers
Volume	2015-April
ISSN (Print)	1058-6393

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

ASJC Scopus subject areas

Signal Processing
Computer Networks and Communications

Access to Document

10.1109/ACSSC.2014.7094609

Cite this

Iqbal, N., Zerguine, A., & Al-Dhahir, N. (2015). RLS-based frequency-domain DFE for uplink SC-FDMA. In M. B. Matthews (Ed.), Conference Record of the 48th Asilomar Conference on Signals, Systems and Computers (pp. 1026-1029). Article 7094609 (Conference Record - Asilomar Conference on Signals, Systems and Computers; Vol. 2015-April). IEEE Computer Society. https://doi.org/10.1109/ACSSC.2014.7094609

@inproceedings{b109896561df436ba2968da001fb785f,

title = "RLS-based frequency-domain DFE for uplink SC-FDMA",

abstract = "The decision feedback equalizer is well known to outperform a linear equalizer in highly frequency-selective fading channels. In this paper, we develop a low-complexity Adaptive Frequency Domain Decision Feedback Equalizer (AFD-DFE) for Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems. Both the feedforward and feedback filters operate in the frequency-domain and are adapted using the block Recursive Least Squares (RLS) algorithm. Since this DFE design operation is performed entirely in the frequency-domain, the complexity of the block RLS algorithm can be reduced substantially when compared to its time-domain counterpart by exploiting matrix structure in the frequency-domain. We also show that the RLS-based AFD-DFE not only enjoys a significant reduction in computational complexity when compared to the frequency-domain non-adaptive channel-estimate-based MMSE-DFE but its performance is also better than that of the practical MMSE DFE (with decision errors) and close to the ideal MMSE DFE (with correct decisions).",

author = "Naveed Iqbal and Azzedine Zerguine and Naofal Al-Dhahir",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.",

year = "2015",

month = apr,

day = "24",

doi = "10.1109/ACSSC.2014.7094609",

language = "English",

series = "Conference Record - Asilomar Conference on Signals, Systems and Computers",

publisher = "IEEE Computer Society",

pages = "1026--1029",

editor = "Matthews, {Michael B.}",

booktitle = "Conference Record of the 48th Asilomar Conference on Signals, Systems and Computers",

address = "United States",

}

Iqbal, N , Zerguine, A & Al-Dhahir, N 2015, RLS-based frequency-domain DFE for uplink SC-FDMA. in MB Matthews (ed.), Conference Record of the 48th Asilomar Conference on Signals, Systems and Computers., 7094609, Conference Record - Asilomar Conference on Signals, Systems and Computers, vol. 2015-April, IEEE Computer Society, pp. 1026-1029. https://doi.org/10.1109/ACSSC.2014.7094609

RLS-based frequency-domain DFE for uplink SC-FDMA. / Iqbal, Naveed ; Zerguine, Azzedine; Al-Dhahir, Naofal.
Conference Record of the 48th Asilomar Conference on Signals, Systems and Computers. ed. / Michael B. Matthews. IEEE Computer Society, 2015. p. 1026-1029 7094609 (Conference Record - Asilomar Conference on Signals, Systems and Computers; Vol. 2015-April).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - RLS-based frequency-domain DFE for uplink SC-FDMA

AU - Iqbal, Naveed

AU - Zerguine, Azzedine

AU - Al-Dhahir, Naofal

PY - 2015/4/24

Y1 - 2015/4/24

N2 - The decision feedback equalizer is well known to outperform a linear equalizer in highly frequency-selective fading channels. In this paper, we develop a low-complexity Adaptive Frequency Domain Decision Feedback Equalizer (AFD-DFE) for Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems. Both the feedforward and feedback filters operate in the frequency-domain and are adapted using the block Recursive Least Squares (RLS) algorithm. Since this DFE design operation is performed entirely in the frequency-domain, the complexity of the block RLS algorithm can be reduced substantially when compared to its time-domain counterpart by exploiting matrix structure in the frequency-domain. We also show that the RLS-based AFD-DFE not only enjoys a significant reduction in computational complexity when compared to the frequency-domain non-adaptive channel-estimate-based MMSE-DFE but its performance is also better than that of the practical MMSE DFE (with decision errors) and close to the ideal MMSE DFE (with correct decisions).

AB - The decision feedback equalizer is well known to outperform a linear equalizer in highly frequency-selective fading channels. In this paper, we develop a low-complexity Adaptive Frequency Domain Decision Feedback Equalizer (AFD-DFE) for Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems. Both the feedforward and feedback filters operate in the frequency-domain and are adapted using the block Recursive Least Squares (RLS) algorithm. Since this DFE design operation is performed entirely in the frequency-domain, the complexity of the block RLS algorithm can be reduced substantially when compared to its time-domain counterpart by exploiting matrix structure in the frequency-domain. We also show that the RLS-based AFD-DFE not only enjoys a significant reduction in computational complexity when compared to the frequency-domain non-adaptive channel-estimate-based MMSE-DFE but its performance is also better than that of the practical MMSE DFE (with decision errors) and close to the ideal MMSE DFE (with correct decisions).

UR - http://www.scopus.com/inward/record.url?scp=84940516945&partnerID=8YFLogxK

U2 - 10.1109/ACSSC.2014.7094609

DO - 10.1109/ACSSC.2014.7094609

M3 - Conference contribution

AN - SCOPUS:84940516945

T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers

SP - 1026

EP - 1029

BT - Conference Record of the 48th Asilomar Conference on Signals, Systems and Computers

A2 - Matthews, Michael B.

PB - IEEE Computer Society

ER -

RLS-based frequency-domain DFE for uplink SC-FDMA

Abstract

Publication series

Bibliographical note

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this