Energy Efficient Precoder Design for Non-Regenerative MIMO-CRN

This letter presents a problem of designing a relay precoding matrix for a multi-input multi-output cognitive relay network, where a secondary system (SS) works in an underlay mode and communicates through a non-regenerative relay. An optimization problem is formulated to maximize the energy efficie...

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Bibliographic Details
Published in:IEEE wireless communications letters Vol. 6; no. 5; pp. 646 - 649
Main Authors: Maurya, Shikha, Bansal, Matadeen
Format: Journal Article
Language:English
Published: IEEE 01.10.2017
Subjects:
augmented Lagrangian method
cognitive radio
Energy efficiency
Interference
MIMO
Optimization
Precoding
Programming
Radio networks
Relay networks (telecommunications)
relay precoding matrix
ISSN:2162-2337, 2162-2345
Online Access:Get full text
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Summary:This letter presents a problem of designing a relay precoding matrix for a multi-input multi-output cognitive relay network, where a secondary system (SS) works in an underlay mode and communicates through a non-regenerative relay. An optimization problem is formulated to maximize the energy efficiency of the SS subject to a transmit power constraint and an interference constraint. An efficient scheme based on the fractional programming and augmented Lagrangian multiplier method is proposed to solve the resultant problem. Numerical results are provided to show the effectiveness of the proposed scheme.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2017.2726533