eprintid: 10056448
rev_number: 25
eprint_status: archive
userid: 608
dir: disk0/10/05/64/48
datestamp: 2018-09-19 14:08:39
lastmod: 2021-10-09 22:51:27
status_changed: 2019-02-28 17:05:46
type: article
metadata_visibility: show
creators_name: Tang, J
creators_name: Shojaeifard, A
creators_name: So, DKC
creators_name: Wong, KK
creators_name: Zhao, N
title: Energy Efficiency Optimization for CoMP-SWIPT Heterogeneous Networks
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
keywords: Interference, Array signal processing, Resource management, Receivers, Optimization, Wireless communication, Quality of service
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: In this paper, a fundamental study of energy efficiency (EE) optimization for coordinated multi-point (CoMP)- simultaneous wireless information and power transfer (SWIPT) heterogeneous networks (HetNets) is provided. We aim to optimize the EE whilst satisfying certain quality-of-service (QoS) requirements in regard to transmission rate and energy harvesting at both the macro-cell and small-cells. The corresponding joint beamforming and power allocation in the presence of intra- and inter-cell interference constitutes a EE maximization problem that is non-convex, and hence very challenging to solve. In order to solve this problem, we propose to separate the beamforming design and power allocation processes. First, we adopt linear zero-forcing (ZF) beamforming to suppress the multi-user interference from both the energy harvesting users (EH-UEs) as well as the information decoding users (ID-UEs), thus transforming the HetNet under consideration to a virtual point-to-point system. An efficient power allocation algorithm is then developed to maximize the corresponding EE. On the other hand, the ZF strategy does not utilize the notion that interference benefits the EH-UEs. As a result, we propose a partial zeroforcing (PZF) approach by differentiating the EH-UEs and IDUEs in order to further improve the EE. Our findings show that the EE can be significantly improved through the integration of CoMP-SWIPT in HetNets.
date: 2018-12
date_type: published
official_url: https://doi.org/10.1109/TCOMM.2018.2866852
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
article_type_text: Journal Article
verified: verified_manual
elements_id: 1584811
doi: 10.1109/TCOMM.2018.2866852
language_elements: English
lyricists_name: Shojaeifard, Arman
lyricists_name: Wong, Kai-Kit
lyricists_id: ASHOJ33
lyricists_id: KWONG98
actors_name: Kokkinos, Iason
actors_name: Bracey, Alan
actors_id: IKOKK25
actors_id: ABBRA90
actors_role: owner
actors_role: impersonator
full_text_status: public
publication: IEEE Transactions on Communications
volume: 66
number: 12
pagerange: 6368-6383
issn: 0090-6778
citation:        Tang, J;    Shojaeifard, A;    So, DKC;    Wong, KK;    Zhao, N;      (2018)    Energy Efficiency Optimization for CoMP-SWIPT Heterogeneous Networks.                   IEEE Transactions on Communications , 66  (12)   pp. 6368-6383.    10.1109/TCOMM.2018.2866852 <https://doi.org/10.1109/TCOMM.2018.2866852>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10056448/1/Shojaeifard_Energy%20Efficiency%20Optimization%20for%20CoMP-SWIPT%20Heterogeneous%20Networks_AAM.pdf