Factor graph EM algorithm for joint channel tracking and MAP detection of MIMO-OFDMA in fading channels

Sau-Hsuan Wu

doi:10.1109/ICASSP.2008.4518206

Factor graph EM algorithm for joint channel tracking and MAP detection of MIMO-OFDMA in fading channels

Sau-Hsuan Wu^*

^*Corresponding author for this work

Department of Electrical and Computer Engineering

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

1 Scopus citations

Abstract

Based on the expectation maximization (EM) algorithm, a joint channel tracking and maximal a posteriori symbol detection method is proposed for orthogonal frequency division multiple access systems employing multiple transmit and receive antennas (MIMO). Using the Forney-style factor graph (FFG), a forward-and-backward signal processing method is developed to recursively solve the EM problem for joint estimation and detection (JED) in MIMO fading channels. By proper message scheduling and passing over the FFG, simulations show that the proposed algorithm is effective for joint MIMO channel tracking and symbol detection in fast fading channels.

Original language	English
Title of host publication	2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
Pages	2701-2704
Number of pages	4
DOIs	https://doi.org/10.1109/ICASSP.2008.4518206
State	Published - 16 Sep 2008
Event	2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP - Las Vegas, NV, United States Duration: 31 Mar 2008 → 4 Apr 2008

Publication series

Name	ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)	1520-6149

Conference

Conference	2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
Country/Territory	United States
City	Las Vegas, NV
Period	31/03/08 → 4/04/08

Keywords

EM
Factor graph
Joint estimation and detection
MIMO
OFDM
OFDMA

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10.1109/ICASSP.2008.4518206

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Wu, S-H. (2008). Factor graph EM algorithm for joint channel tracking and MAP detection of MIMO-OFDMA in fading channels. In 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP (pp. 2701-2704). Article 4518206 (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings). https://doi.org/10.1109/ICASSP.2008.4518206

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title = "Factor graph EM algorithm for joint channel tracking and MAP detection of MIMO-OFDMA in fading channels",

abstract = "Based on the expectation maximization (EM) algorithm, a joint channel tracking and maximal a posteriori symbol detection method is proposed for orthogonal frequency division multiple access systems employing multiple transmit and receive antennas (MIMO). Using the Forney-style factor graph (FFG), a forward-and-backward signal processing method is developed to recursively solve the EM problem for joint estimation and detection (JED) in MIMO fading channels. By proper message scheduling and passing over the FFG, simulations show that the proposed algorithm is effective for joint MIMO channel tracking and symbol detection in fast fading channels.",

keywords = "EM, Factor graph, Joint estimation and detection, MIMO, OFDM, OFDMA",

author = "Sau-Hsuan Wu",

year = "2008",

month = sep,

day = "16",

doi = "10.1109/ICASSP.2008.4518206",

language = "English",

isbn = "1424414849",

series = "ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings",

pages = "2701--2704",

booktitle = "2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP",

note = "2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP ; Conference date: 31-03-2008 Through 04-04-2008",

}

Wu, S-H 2008, Factor graph EM algorithm for joint channel tracking and MAP detection of MIMO-OFDMA in fading channels. in 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP., 4518206, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, pp. 2701-2704, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP, Las Vegas, NV, United States, 31/03/08. https://doi.org/10.1109/ICASSP.2008.4518206

Factor graph EM algorithm for joint channel tracking and MAP detection of MIMO-OFDMA in fading channels. / Wu, Sau-Hsuan.
2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP. 2008. p. 2701-2704 4518206 (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings).

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

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AU - Wu, Sau-Hsuan

PY - 2008/9/16

Y1 - 2008/9/16

N2 - Based on the expectation maximization (EM) algorithm, a joint channel tracking and maximal a posteriori symbol detection method is proposed for orthogonal frequency division multiple access systems employing multiple transmit and receive antennas (MIMO). Using the Forney-style factor graph (FFG), a forward-and-backward signal processing method is developed to recursively solve the EM problem for joint estimation and detection (JED) in MIMO fading channels. By proper message scheduling and passing over the FFG, simulations show that the proposed algorithm is effective for joint MIMO channel tracking and symbol detection in fast fading channels.

AB - Based on the expectation maximization (EM) algorithm, a joint channel tracking and maximal a posteriori symbol detection method is proposed for orthogonal frequency division multiple access systems employing multiple transmit and receive antennas (MIMO). Using the Forney-style factor graph (FFG), a forward-and-backward signal processing method is developed to recursively solve the EM problem for joint estimation and detection (JED) in MIMO fading channels. By proper message scheduling and passing over the FFG, simulations show that the proposed algorithm is effective for joint MIMO channel tracking and symbol detection in fast fading channels.

KW - EM

KW - Factor graph

KW - Joint estimation and detection

KW - MIMO

KW - OFDM

KW - OFDMA

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DO - 10.1109/ICASSP.2008.4518206

M3 - Conference contribution

AN - SCOPUS:51449100754

SN - 1424414849

SN - 9781424414840

T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

SP - 2701

EP - 2704

BT - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP

T2 - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP

Y2 - 31 March 2008 through 4 April 2008

ER -

Factor graph EM algorithm for joint channel tracking and MAP detection of MIMO-OFDMA in fading channels

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