Title :
A Cooperative Coding Scheme Based on OFDM System
Author :
Wang, Chaowei ; Li, Lihua ; Xu, Yongtai ; Wang, Dajian
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, a relay cooperative scheme is proposed for cellular OFDM system. In the scheme, mobile station (MS) reorganizes and recombines the bits stream, and base station (BS) combines the signals from the two independent paths, direct and relay links; at the relay, signals are redesigned. And two relay modes are provided for different scenarios. Furthermore, a supplementary strategy of sub-carriers re-allocation is proposed to enhance the system. Finally, numerical simulation results show that the proposed scheme achieves transmit diversity and improves system performance.
Keywords :
OFDM modulation; cellular radio; diversity reception; encoding; base station; cellular OFDM system; cooperative coding scheme; mobile station; relay cooperative scheme; relay link; subcarrier reallocation; transmit diversity; Chaotic communication; Cooperative systems; Fading; Iterative decoding; Laboratories; OFDM; Relays; Signal processing; Turbo codes; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5303271
