Frequency domain estimation of multiple access OFDM channels

Tareq Y. Al-Naffouri; Ashfaq Ahmed Mukaddam

doi:10.1109/ICSPC.2007.4728502

Frequency domain estimation of multiple access OFDM channels

Tareq Y. Al-Naffouri, Ashfaq Ahmed Mukaddam

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

2 Scopus citations

Abstract

OFDM modulation combines the advantages of high achievable rates and relatively easy implementation. However, for proper recovery of the input, the OFDM receiver needs accurate channel information. Most algorithms proposed in literature perform channel estimation in the time domain which increases the computational complexity in multiaccess situations where the user is only interested in part of the spectrum. In this paper, we propose a frequency domain algorithm for channel estimation in OFDM. The algorithm performs eigenvalue decomposition of the channel autocorrelation matrix and approximates the channel frequency response seen by each user by the first few dominant eigenvectors. This reduces the parameter estimation space and allows estimation using a few number of pilots¹.

Original language	English (US)
Title of host publication	ICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications
Pages	1047-1050
Number of pages	4
DOIs	https://doi.org/10.1109/ICSPC.2007.4728502
State	Published - 2007
Externally published	Yes
Event	2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007 - Dubai, United Arab Emirates Duration: Nov 14 2007 → Nov 27 2007

Other

Other	2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007
Country/Territory	United Arab Emirates
City	Dubai
Period	11/14/07 → 11/27/07

Keywords

Channel estimation
Frequency domain estimation
OFDM
Parameter reduction

ASJC Scopus subject areas

Computer Networks and Communications
Signal Processing
Communication

Access to Document

10.1109/ICSPC.2007.4728502

Cite this

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title = "Frequency domain estimation of multiple access OFDM channels",

abstract = "OFDM modulation combines the advantages of high achievable rates and relatively easy implementation. However, for proper recovery of the input, the OFDM receiver needs accurate channel information. Most algorithms proposed in literature perform channel estimation in the time domain which increases the computational complexity in multiaccess situations where the user is only interested in part of the spectrum. In this paper, we propose a frequency domain algorithm for channel estimation in OFDM. The algorithm performs eigenvalue decomposition of the channel autocorrelation matrix and approximates the channel frequency response seen by each user by the first few dominant eigenvectors. This reduces the parameter estimation space and allows estimation using a few number of pilots1.",

keywords = "Channel estimation, Frequency domain estimation, OFDM, Parameter reduction",

author = "Al-Naffouri, {Tareq Y.} and Mukaddam, {Ashfaq Ahmed}",

year = "2007",

doi = "10.1109/ICSPC.2007.4728502",

language = "English (US)",

isbn = "9781424412365",

pages = "1047--1050",

booktitle = "ICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications",

note = "2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007 ; Conference date: 14-11-2007 Through 27-11-2007",

}

Al-Naffouri, TY & Mukaddam, AA 2007, Frequency domain estimation of multiple access OFDM channels. in ICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications., 4728502, pp. 1047-1050, 2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007, Dubai, United Arab Emirates, 11/14/07. https://doi.org/10.1109/ICSPC.2007.4728502

TY - GEN

T1 - Frequency domain estimation of multiple access OFDM channels

AU - Al-Naffouri, Tareq Y.

AU - Mukaddam, Ashfaq Ahmed

PY - 2007

Y1 - 2007

N2 - OFDM modulation combines the advantages of high achievable rates and relatively easy implementation. However, for proper recovery of the input, the OFDM receiver needs accurate channel information. Most algorithms proposed in literature perform channel estimation in the time domain which increases the computational complexity in multiaccess situations where the user is only interested in part of the spectrum. In this paper, we propose a frequency domain algorithm for channel estimation in OFDM. The algorithm performs eigenvalue decomposition of the channel autocorrelation matrix and approximates the channel frequency response seen by each user by the first few dominant eigenvectors. This reduces the parameter estimation space and allows estimation using a few number of pilots1.

AB - OFDM modulation combines the advantages of high achievable rates and relatively easy implementation. However, for proper recovery of the input, the OFDM receiver needs accurate channel information. Most algorithms proposed in literature perform channel estimation in the time domain which increases the computational complexity in multiaccess situations where the user is only interested in part of the spectrum. In this paper, we propose a frequency domain algorithm for channel estimation in OFDM. The algorithm performs eigenvalue decomposition of the channel autocorrelation matrix and approximates the channel frequency response seen by each user by the first few dominant eigenvectors. This reduces the parameter estimation space and allows estimation using a few number of pilots1.

KW - Channel estimation

KW - Frequency domain estimation

KW - OFDM

KW - Parameter reduction

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U2 - 10.1109/ICSPC.2007.4728502

DO - 10.1109/ICSPC.2007.4728502

M3 - Conference contribution

AN - SCOPUS:60349103238

SN - 9781424412365

SP - 1047

EP - 1050

BT - ICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications

T2 - 2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007

Y2 - 14 November 2007 through 27 November 2007

ER -

Frequency domain estimation of multiple access OFDM channels

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