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IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Regular Section
An Efficient Beamforming Algorithm for Large-Scale Phased Arrays with Lossy Digital Phase Shifters
Shunji TANAKATomohiko MITANIYoshio EBIHARA
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2014 Volume E97.B Issue 4 Pages 783-790

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Abstract

An efficient beamforming algorithm for large-scale phased arrays with lossy digital phase shifters is presented. This problem, which arises in microwave power transmission from solar power satellites, is to maximize the array gain in a desired direction with the gain loss of the phase shifters taken into account. In this paper the problem is first formulated as a discrete optimization problem, which is then decomposed into element-wise subproblems by the real rotation theorem. Based on this approach, a polynomial-time algorithm to solve the problem numerically is constructed and its effectiveness is verified by numerical simulations.

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© 2014 The Institute of Electronics, Information and Communication Engineers
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