A Message Passing Approach to Joint Channel Estimation and Decoding with Carrier Frequency Offset in Time Selective Rayleigh Fading Channel

Author

Hongjie Zhao ; Hua Wang ; Nan Wu ; Jingming Kuang

Author_Institution

Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China

fYear

2013

fDate

2-5 June 2013

Firstpage

1

Lastpage

5

Abstract

This paper presents a message passing approach to joint channel estimation, data detection and decoding over time-selective Rayleigh fading channel with residual carrier frequency offset (CFO). The proposed algorithm utilizes the sum product algorithm (SPA) implemented on a factor graph (FG) representing the joint a posteriori probability distribution of the unknown CFO, information bits and channel coefficients vector given the channel output. A combination of particle filtering and Gaussian parameterization is employed to approximate the exact probability density function in message passing for CFO and channel estimation. Computer simulations demonstrate the effectiveness of the proposed algorithm in combating the CFO over unknown Rayleigh fading channels.

Keywords

Rayleigh channels; channel coding; fading channels; graph theory; message passing; particle filtering (numerical methods); telecommunication computing; wireless channels; CFO; FG; Gaussian parameterization; SPA; carrier frequency offset; channel coefficients vector; data decoding; data detection; factor graph; information bits; joint channel decoding; joint channel estimation; message passing approach; particle filtering; probability density function; probability distribution; sum product algorithm; time selective rayleigh fading channel; Channel estimation; Fading; Iterative decoding; Joints; Message passing; Receivers; Synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2013 IEEE 77th

Conference_Location

Dresden

ISSN

1550-2252

Type

conf

DOI

10.1109/VTCSpring.2013.6691826

Filename

6691826