DocumentCode :
2460558
Title :
Cooperative Diversity Scheme with Two Relay Stations and Linear Coherent Detection
Author :
Machado, Renato ; Vieira, Robson Domingos ; De Noronha Neto, Mario
Author_Institution :
Fed. Univ. of Santa Maria, Santa Maria, Brazil
fYear :
2010
fDate :
6-9 Sept. 2010
Firstpage :
1
Lastpage :
5
Abstract :
A new cooperative diversity scheme with two relay stations and linear coherent detection at the destination node is proposed in this paper. We consider that a perfect CSI is available at the destination node, as well to the relay stations, allowing each relay station to perform optimal beamforming. In order to evaluate the effect of a quantized feedback link between the destination node and the relay stations, we also consider that the destination node sends, additionally, b more bits to the relays. Using these b bits, the relay stations can apply a correction factor to the detected symbol and then send it to the destination node which performs a linear coherent detection. In our proposal, the communication between the relay stations is not allowed. The performance of the proposed scheme is compared with the well known MRC receiver technique with four receive antennas in order to show that the proposed and the MRC schemes achieve the same diversity order. In addition, the influence of the number of feedback bits and the SNR between the transmit node and relay stations are also addressed.
Keywords :
array signal processing; diversity reception; receiving antennas; wireless channels; MRC receiver technique; cooperative diversity scheme; correction factor; destination node; diversity order; feedback bits; linear coherent detection; optimal beamforming; perfect CSI; quantized feedback link; receive antennas; relay stations; transmit node; Bit error rate; Coherence; Diversity reception; Relays; Signal to noise ratio; Transmitting antennas; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd
Conference_Location :
Ottawa, ON
ISSN :
1090-3038
Print_ISBN :
978-1-4244-3573-9
Electronic_ISBN :
1090-3038
Type :
conf
DOI :
10.1109/VETECF.2010.5594282
Filename :
5594282
Link To Document :
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