Title :
Physical Layer Network Coding with Channel and Delay Estimation
Author :
Li, Yixin ; Zheng, Fu-chun
Author_Institution :
Sch. of Syst. Eng., Univ. of Reading, Reading, UK
Abstract :
Decode-and-forward physical layer network coding (PLNC) is one of the promising high-performance techniques for wireless relay networks, but little has been reported on the case of asynchronous senarios. This paper presents a channel and delay estimation algorithm along with a detection scheme for Two-Way-Relay-Network (TWRN) in Rayleigh block- flat-fading channels. Prefix and suffix training sequences are added for frame-based synchronization and channel estimation. The Cramer-Rao Bound (CRB) is given, and simulations show that the mean square error(MSE) of channel estimation of the proposed scheme could reach the CRB. The end-to-end BER performance is also shown in simulation.
Keywords :
Rayleigh channels; channel estimation; decode and forward communication; mean square error methods; network coding; relay networks (telecommunication); CRB; Cramer-Rao Bound; MSE; PLNC; Rayleigh block-flat-fading channel; TWRN; channel estimation; decode-and-forward network; delay estimation; detection scheme; end-to-end BER performance; frame-based synchronization; mean square error; physical layer network coding; prefix training sequences; suffix training sequences; two-way-relay-network; wireless relay network; Channel estimation; Delay estimation; Estimation; Network coding; Relays; Training;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6399200
