Title :
Distributed space-frequency coding for OFDM-based hybrid relay selection
Author :
Sileh, Ibrahim Khalil ; Xiang, Wei
Author_Institution :
Univ. of Southern Queensland, Toowoomba, QLD, Australia
Abstract :
Cooperative communication in conjunction with orthogonal frequency division multiplexing (OFDM) has recently emerged as a promising technique with the potential to dominate future generations of broadband wireless communications systems. In this paper, we propose an OFDM modulation scheme combined with distributed space-frequency codes (DSFC) based upon a hybrid relay selection protocol. The DSFC process is not required for the amplify-and-forward (AF) relays to reduce the system complexity. Simulation results show that a substantial improvement in bit error rate (BER) performance can be achieved in comparison with conventional relaying protocols. Full rate transmission and diversity order is attainable by this proposed system.
Keywords :
OFDM modulation; amplify and forward communication; cooperative communication; diversity reception; error statistics; protocols; relay networks (telecommunication); AF relays; BER performance; DSFC process; OFDM modulation scheme; OFDM-based hybrid relay selection; amplify-and-forward relays; bit error rate; broadband wireless communication systems; cooperative communication; distributed space-frequency coding; diversity order; full rate transmission; hybrid relay selection protocol; orthogonal frequency division multiplexing; system complexity; Broadband communication; Encoding; Fading; OFDM; Protocols; Relays; Wireless communication; Alamouti code; DSFC; OFDM; hybrid relay protocol;
Conference_Titel :
Communications and Information Technologies (ISCIT), 2012 International Symposium on
Conference_Location :
Gold Coast, QLD
Print_ISBN :
978-1-4673-1156-4
Electronic_ISBN :
978-1-4673-1155-7
DOI :
10.1109/ISCIT.2012.6380969
