Energy-Efficient Precoder Design for Multi-User MIMO Systems With a Full-Duplex Base Station

In this paper, we investigate the downlink (DL) and uplink (UL) precoder design for a multi-user multiple-input multiple-output (MU-MIMO) network consisting of a full-duplex (FD) base station (BS) and multiple users operating in the half-duplex mode. Our goal is to find the precoders that maximize t...

Full description

Saved in:
Bibliographic Details
Published in:IEEE access Vol. 7; pp. 157126 - 157135
Main Authors: Wang, Meng-Jie, Tseng, Fan-Shuo, Lin, Chun-Tao
Format: Journal Article
Language:English
Published: Piscataway IEEE 2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
co-channel interference (CCI)
Covariance matrices
Energy efficiency
fractional programming
full-duplex (FD)
iterative water-filling (IWF)
Linear programming
MIMO (control systems)
MIMO communication
Multi-user multiple-input multiple-output (MU-MIMO)
Optimization
Power demand
Precoding
Radio equipment
self-interference (SI)
Symmetric matrices
uplink-downlink (UL-DL) duality
ISSN:2169-3536, 2169-3536
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we investigate the downlink (DL) and uplink (UL) precoder design for a multi-user multiple-input multiple-output (MU-MIMO) network consisting of a full-duplex (FD) base station (BS) and multiple users operating in the half-duplex mode. Our goal is to find the precoders that maximize the overall energy efficiency (EE). However, the design problem is intractable to solve due to the fractional optimization formulation. Besides, the self and co-channel interferences also aggravate the design difficulty. To solve the problem, we first apply the UL-DL duality to have the reformulated UL and dual-UL precoder optimization problems. Applying the Dinkelbach's algorithm, we show that both the UL and dual-UL-precoders can be derived with the proposed iterative water-filling (IWF) algorithm. Finally, the DL precoders are obtained by exploiting the duality property again. Note that the proposed precoders are of closed-form expressions. Simulation results justify the superiority of the proposed scheme over the existing design.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2019.2949712