Title :
On the performance of channel estimation in cooperative wireless communications
Author :
Somrobru, Mongkol ; Pirak, Chaiyod ; Ascheid, Gerd
Author_Institution :
Sch. of Eng. (TGGS), King Mongkut´s Univ. of Technol. North Bangkok, Bangkok, Thailand
Abstract :
In this paper, we propose a least square (LS) approach to estimate channel using the pilot transmission for the decode-and-forward (DF) and the estimate-and-forward (EF) protocols in cooperative wireless communications. In EF scheme estimate channel of the source-to-relay(SR) link for calculating the cooperative maximum ratio combining (C-MRC) compared with DF protocol by the maximum ratio combining (MRC). We observed performance of the proposed scheme by simulation. Furthermore, simulation results show the performance of the proposed LS channel estimation in EF scheme is at least 1-dB higher than DF protocol.
Keywords :
channel estimation; cooperative communication; decode and forward communication; diversity reception; least squares approximations; C-MRC; DF protocol; EF protocol; EF scheme; LS approach; SR link; channel estimation performance; cooperative maximum ratio combining; cooperative wireless communications; decode-and-forward protocol; estimate-and-forward protocol; least square approach; pilot transmission; source-to-relay link; Bit error rate; Channel estimation; Diversity reception; Protocols; Relays; Signal to noise ratio; Wireless communication; Channel Estimation; Cooperative Maximum Ratio Combining (C-MRC); Diversity Gain; Estimate-and-Forward (EF); Least Squares (LS);
Conference_Titel :
Communications (APCC), 2014 Asia-Pacific Conference on
DOI :
10.1109/APCC.2014.7092844
