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Journal articles
Efficient Precoding for Massive MIMO Downlink Under PA Nonlinearities
Abstract : This letter investigates the compensation of the power amplifier (PA) nonlinear distortion (NLD) in large-scale multi-user (MU) multiple-input multiple-output (MIMO) downlink systems. We introduce a PA-aware precoding approach that exploits the high-dimensional degrees of freedom (DoFs), allowed by equipping the base station (BS) by a high number of antennas, and performs the precoded signals that when amplified and passed through the channel, guarantee excellent transmission quality. Specifically, we formulate the proposed PA-aware precoding approach as a simple convex optimization problem which enables efficient, low-complexity, and reliable algorithm implementations. The simulation results demonstrate the strong potential of the proposed approach in terms of improving the link quality and reducing the required computational complexity.
https://hal-cnam.archives-ouvertes.fr/hal-02447523
Contributor : Rafik Zayani Connect in order to contact the contributor
Submitted on : Tuesday, April 27, 2021 - 11:39:05 AM
Last modification on : Thursday, May 6, 2021 - 12:50:49 PM
Contributor : Rafik Zayani Connect in order to contact the contributor
Submitted on : Tuesday, April 27, 2021 - 11:39:05 AM
Last modification on : Thursday, May 6, 2021 - 12:50:49 PM
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