EXPECTATION PROPAGATION APPROACH TO JOINT CHANNEL ESTIMATION AND DECODING FOR OFDM SYSTEMS

被引：0

作者：

Wu, Sheng ^{[1
,4
]}

Kuang, Linling ^{[2
]}

Ni, Zuyao ^{[3
]}

Lu, Jianhua ^{[1
]}

Huang, Defeng ^{[5
]}

Guo, Qinghua ^{[5
,6
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Beijing, Peoples R China

[2] Tsinghua Univ, Tsinghua Space Ctr, Beijing, Peoples R China

[3] Tsinghua Univ, Res Inst Informat Technol, Beijing, Peoples R China

[4] Univ Western Australia, Wireless Broadband Commun & Signal Proc, Shenzhen Key Lab, Nedlands, WA 6009, Australia

[5] Univ Western Australia, Sch Elect Elect & Comp Engn, Nedlands, WA 6009, Australia

[6] Univ Wollongong, Sch Elect Comp & Telecommun Engn, Wollongong, NSW 2522, Australia

来源：

2014 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP) | 2014年

基金：

澳大利亚研究理事会;

关键词：

Expectation propagation; joint channel estimation and decoding; message passing; OFDM; FACTOR GRAPHS; RECEIVER;

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

We propose a message-passing algorithm of joint channel estimation and decoding for OFDM systems, where expectation propagation is exploited to deal with channel estimation. Specially, the message updating is formulated into a recursive form. As a result, for system with K subcarriers and L channel taps, only O(K + L) messages need to be tracked, and meanwhile they can be efficiently calculated using FFT with complexity O(K vertical bar A vertical bar + K log 2 K), where vertical bar A vertical bar denotes the constellation size. Numerical experiments show that our algorithm achieves BER performance within 0.5 dB of the knownchannel bound.

引用

页数：5

共 50 条

[21] Combined decoding and channel estimation of OFDM systems in mobile radio networks
Jarbot, L
1997 IEEE 47TH VEHICULAR TECHNOLOGY CONFERENCE PROCEEDINGS, VOLS 1-3: TECHNOLOGY IN MOTION, 1997, : 1601 - 1604
[22] Novel joint iterative channel estimation and space-frequency decoding algorithm for SFBC-OFDM systems
Zhou, Peng
Zhao, Chun-Ming
Yang, Yi-Jin
Xu, Wei
2007, Editorial Board of Journal on Communications, No.1 Binhe Road, Hepingli, Dongcheng District, Beijing, 1000013, China (28):
[23] Joint Data Detection and Channel Estimation for MIMO-OFDM Systems via EM Algorithm and Sphere Decoding
Wang, Meng
Quevedo, Daniel E.
Goodwin, Graham C.
GLOBECOM 2006 - 2006 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, 2006,
[24] Block Expectation Propagation for Downlink Channel Estimation in Massive MIMO Systems
Wu, Sheng
Ni, Zuyao
Meng, Xiangming
Kuang, Linling
IEEE COMMUNICATIONS LETTERS, 2016, 20 (11) : 2225 - 2228
[25] Expectation-Maximization (EM) Based Channel Estimation and Interpolation in OFDM Systems
Ustunel, Eser
2012 IEEE SYMPOSIUM ON COMPUTERS AND COMMUNICATIONS (ISCC), 2012, : 166 - 170
[26] Joint carrier frequency offset and channel estimation in OFDM systems
Freda, MM
Weng, JF
Le-Ngoc, T
2005 INTERNATIONAL CONFERENCE ON WIRELESS NETWORKS, COMMUNICATIONS AND MOBILE COMPUTING, VOLS 1 AND 2, 2005, : 1089 - 1093
[27] On Joint Fine Time Adjustment and Channel Estimation for OFDM Systems
Wang, Chin-Liang
Wang, Hung-Chin
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2009, 8 (10) : 4940 - 4944
[28] Joint Blind Channel and Control Signal Estimation for OFDM Systems
AlSusa, E.
ElKalagy, A.
2010 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE GLOBECOM 2010, 2010,
[29] Joint Channel Estimation Methods in Carrier Aggregation OFDM Systems
Su, Borching
Wang, Min-Yu
2014 IEEE 79TH VEHICULAR TECHNOLOGY CONFERENCE (VTC-SPRING), 2014,
[30] Joint channel estimation and phase noise suppression for OFDM systems
Lee, JH
Yang, JS
Kim, SC
Park, YW
VTC2005-SPRING: 2005 IEEE 61ST VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS, 2005, : 467 - 470

← 1 2 3 4 5 →