Hybrid precoding for physical layer multicasting
File(s)Hybrid Precoding for Physical Layer Multicasting.pdf (190.86 KB)
Accepted version
Author(s)
Dai, M
Clerckx, B
Type
Journal Article
Abstract
This work investigates the problem of downlink transmit precoding for physical layer multicasting with a limited number of radio-frequency (RF) chains. To tackle the RF hardware constraint, we consider a hybrid precoder that is partitioned into a high-dimensional RF precoder and a low-dimensional baseband precoder. Considering a total transmit power constraint over the RF chains, the goal is to maximize the minimum (max-min) received signal-to-noise ratio (SNR) among all users. We propose a low complexity algorithm to compute the RF precoder that achieves near-optimal max-min performance. Moreover, we derive a simple condition under which the hybrid precoding driven by a limited number of RF chains incurs no loss of optimality with respect to the fully digital precoding case. Finally, numerical results validate the effectiveness of the proposed algorithm and theoretical findings
Date Issued
2015-11-24
Date Acceptance
2015-11-19
Citation
IEEE Communications Letters, 2015, 20 (2), pp.228-231
ISSN
1558-2558
Publisher
IEEE
Start Page
228
End Page
231
Journal / Book Title
IEEE Communications Letters
Volume
20
Issue
2
Copyright Statement
© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Subjects
Science & Technology
Technology
Telecommunications
Multicasting
limited RF chains
hybrid precoding
low complexity algorithm
ANTENNA-ARRAYS
CHANNEL
Networking & Telecommunications
0906 Electrical And Electronic Engineering
1005 Communications Technologies
0805 Distributed Computing
Publication Status
Published