Title :
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.
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;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.450
