Relay Power Minimization Approach Based on General-Rank Beamforming for Multi-Antenna Relaying Schemes

Cooperative multi-antenna transmission is considered in relay networks, in which a source transmits its information to destination with the help of multi-antenna relay. In the first phase, source transmits its signal to the multi-antenna relay. Then the relay manipulates the received signal with the...

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Bibliographic Details
Main Authors: Rezvani, S. M., Safavi, S. H., Zadeh, R. A. S., Haghbin, A., Davarpanah, R.
Format: Conference Proceeding
Language:English
Subjects:
Array signal processing
Correlation
Quality of service
Relays
Signal to noise ratio
Vectors
Wireless communication
Online Access:Request full text
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Summary:Cooperative multi-antenna transmission is considered in relay networks, in which a source transmits its information to destination with the help of multi-antenna relay. In the first phase, source transmits its signal to the multi-antenna relay. Then the relay manipulates the received signal with the general- rank complex beamforming matrix and retransmits it. Assuming second-order statistics of channel state information, general-rank complex beamforming matrix is determined to minimize the power that dissipated in the multi-antenna relay. We show that this approach yields a closed-form solution and dependency of the forward and backward channels can help us to improve the performance of the network up to 7 dB compared to independent channels.
ISSN:2157-4952
DOI:10.1109/NTMS.2012.6208772