Energy Efficient Precoder in Multi-User MIMO Systems With Imperfect Channel State Information

This letter is on the energy efficient precoder design in multi-user multiple-input multiple-output systems which is also robust with respect to the imperfect channel state information at the transmitters. In other words, we design the precoder matrix associated with each transmitter to maximize the...

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Bibliographic Details
Published in:IEEE wireless communications letters Vol. 8; no. 3; pp. 669 - 672
Main Authors: Vaezy, Hossein, Omidi, Mohammad Javad, Yanikomeroglu, Halim
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.06.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Channel estimation
general energy efficiency
Linear programming
MIMO (control systems)
MIMO communication
Multiple-input multiple-output
Optimization
precoder
Radio transmitters
Receivers
Transmitters
ISSN:2162-2337, 2162-2345
Online Access:Get full text
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Summary:This letter is on the energy efficient precoder design in multi-user multiple-input multiple-output systems which is also robust with respect to the imperfect channel state information at the transmitters. In other words, we design the precoder matrix associated with each transmitter to maximize the general energy efficiency of the network. We investigate the problem in two conventional cases. The first case considers the statistical characterization for the channel estimation error that leads to a quadratically constrained quadratic program with a semi-closed-form solution. Then, we turn our attention to the case which considers only the uncertainty region for the channel estimation error; this case eventually results in a semi-definite program.
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ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2018.2882208