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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Vydané v:IEEE wireless communications letters Ročník 6; číslo 5; s. 646 - 649
Hlavní autori: Maurya, Shikha, Bansal, Matadeen
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: IEEE 01.10.2017
Predmet:
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
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Popis
Shrnutí: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