Turbo Coded OFDM Receiver Using Joint Synchronization, Channel Estimation and Decoding

Author

Li, Si ; Le-Ngoc, Tho ; Kwon, Soon Chan ; Seo, Jong-Soo

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que.

fYear

2007

fDate

11-15 March 2007

Firstpage

2414

Lastpage

2419

Abstract

This paper presents a turbo coded OFDM receiver structure using joint synchronization, channel estimation and decoding. In this proposed scheme, the estimator uses soft-decision information from the previous soft-input soft-output (SISO) decoder to produce better estimates of the unknown parameters, which will in turn help the decoder to make more reliable decision. The whole process will be performed in an iterative manner and good system performance can be achieved with only a few iterations for moderate initial synchronization errors.

Keywords

OFDM modulation; channel estimation; decoding; iterative methods; radio receivers; synchronisation; turbo codes; carrier frequency offset; channel decoding; iterative joint channel estimation; joint synchronization; orthogonal frequency division multiplexing; soft-decision information; soft-input soft-output decoder; synchronization errors; turbo coded OFDM receiver; Channel estimation; Equalizers; Frequency estimation; Frequency synchronization; Iterative algorithms; Iterative decoding; Maximum likelihood decoding; OFDM; Timing; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE

Conference_Location

Kowloon

ISSN

1525-3511

Print_ISBN

1-4244-0658-7

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2007.450

Filename

4224695