Title :
Delay Synchronization Scheme for Distributed Space-Time Block Coded Transmission in 2-Hop Cooperative Relaying System
Author :
Li Yanxin ; Lv Tiejun ; Jia Qi
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Most research on distributed space-time block coding (D-STBC) has assumed that cooperative relay nodes are perfectly synchronized, for the delay destroys the required spacetime signal structure. However, in most practical distributed scenario, perfect synchronization is hard to achieve. To deal with it, this paper applies front end prefilter (FEP) as a delay synchronization scheme which accomplishes both delay synchronization and compensation. In the cooperative diversity strategy, the relay node exploits amplify-and-forward (AF) and decode-and-forward (DF) relaying patterns to assist the source node. Based on the platform of 2-hop cooperative relaying system, the results of Monte-Carlo simulations prove that FEP can make contribution to good bit error rate (BER) performance.
Keywords :
Monte Carlo methods; block codes; decoding; error statistics; filtering theory; multicast communication; space-time codes; 2-hop cooperative relaying system; Monte-Carlo simulation; amplify-and-forward relaying pattern; bit error rate; cooperative diversity strategy; decode-and-forward relaying pattern; delay synchronization scheme; distributed space-time block coded transmission; front end prefilter; space-time signal structure; Bit error rate; Delay; Noise; Protocols; Relays; Synchronization; Wireless communication;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5600765
