DocumentCode :
1593173
Title :
Rate compatible punctured turbo-coded hybrid ARQ for OFDM in a frequency selective fading channel
Author :
Garg, Deepshikha ; Adachi, Fumiyuki
Author_Institution :
Graduate Sch. of Eng., Tohoku Univ., Sendai, Japan
Volume :
4
fYear :
2003
Firstpage :
2725
Abstract :
Recently orthogonal frequency division multiplexing (OFDM) has gained a lot of attention in mobile radio communications because of its ability to allow high data rate transmission in a severe frequency selective fading channel. Rate compatible punctured turbo coded hybrid ARQ (RCPT HARQ) has been found to give improved throughput performance in a DS-CDMA system. However the extent to which the RCPT HARQ improves the throughput performance of the OFDM system has not been fully understood. In this paper we evaluate by computer simulations the performance of the RCPT HARQ for the OFDM system. It is found that the type II RCPT HARQ has the highest throughput when minimum amount of redundancy bits are transmitted with each retransmission, typical case is when the puncturing period for the parity sequences is 8. It was found that the OFDM system with RCPT HARQ outperforms the DS-CDMA system with RCPT HARQ in a frequency selective channel.
Keywords :
OFDM modulation; automatic repeat request; code division multiple access; fading channels; mobile radio; spread spectrum communication; turbo codes; DS-CDMA system; OFDM; RCPT HARQ; automatic repeat request; frequency selective fading channel; mobile radio communications; orthogonal frequency division multiplexing; rate compatible punctured turbo coded hybrid ARQ; redundancy bits; AWGN; Automatic repeat request; Fading; Frequency; Land mobile radio; Mobile communication; Multiaccess communication; OFDM; Throughput; Turbo codes;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
ISSN :
1090-3038
Print_ISBN :
0-7803-7757-5
Type :
conf
DOI :
10.1109/VETECS.2003.1208888
Filename :
1208888
Link To Document :
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