Title :
An Iterative Decoding Technique for Cooperative STBC-OFDM Systems with Multiple Carrier Frequency Offsets
Author :
Kim, Yeong Jun ; Lee, Heesoo ; Chung, Hyun Kyu ; Cho, Yong Soo
Abstract :
In this paper, an iterative decoding technique for cooperative space-time block coded orthogonal frequency division multiplexing (STBC-OFDM) systems is proposed to mitigate the intercarrier interference (ICI) caused by multiple carrier frequency offsets (CFOs) in cooperative transmission. The proposed iterative decoding technique is shown to mitigate the noise enhancement effect on the STBC-OFDM signals caused by multiple CFOs, and be effective in reducing ICI especially when the system has a large FFT size and a large multiple CFOs.
Keywords :
OFDM modulation; block codes; fast Fourier transforms; intercarrier interference; iterative decoding; mobile radio; radio networks; space-time codes; FFT; STBC-OFDM-based cooperative MMR system; cooperative space-time block coding; intercarrier interference; iterative decoding technique; mobile multihop relay network; multiple carrier frequency offset; noise enhancement; orthogonal frequency division multiplexing system; Computational complexity; Frequency estimation; Interference cancellation; Iterative decoding; Land mobile radio; Mobile communication; OFDM; Relays; Space technology; Spread spectrum communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394476
