Performance Analysis of Weighted Rank Constrained Rank Minimization Interference Alignment for Three-Tier Downlink Heterogeneous Networks

Ahmed M. BENAYA; Osamu MUTA; Maha ELSABROUTY

doi:10.1587/transcom.2019EBP3084

Performance Analysis of Weighted Rank Constrained Rank Minimization Interference Alignment for Three-Tier Downlink Heterogeneous Networks

Ahmed M. BENAYA, Osamu MUTA, Maha ELSABROUTY

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Heterogeneous networks (HetNets) technology is expected to be applied in next generation cellular networks to boost system capacity. However, applying HetNets introduces a significant amount of interference among different tiers within the same cell. In this paper, we propose a weighted rank constrained rank minimization (WRCRM) based interference alignment (IA) approach for three-tier HetNets. The concept of RCRM is applied in a different way to deal with the basic characteristic of different tiers: their different interference tolerance. In the proposed WRCRM approach, interference components at different tiers are weighted with different weighting factors (WFs) to reflect their vulnerability to interference. First, we derive an inner and a loose outer bound on the achievable degrees of freedom (DoF) for the three-tier system that is modeled as a three-user mutually interfering broadcast channel (MIBC). Then, the derived bounds along with the well-known IA feasibility conditions are used to show the effectiveness of the proposed WRCRM approach. Results show that there exist WF values that maximize the achievable interference-free dimensions. Moreover, adjusting the required number of DoF according to the derived bounds improves the performance of the WRCRM approach.

Publication: IEICE TRANSACTIONS on Communications Vol.E103-B No.3 pp.262-271

Publication Date: 2020/03/01

Publicized: 2019/08/27

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2019EBP3084

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

Authors

Ahmed M. BENAYA
  Egypt-Japan University of Science and Technology,Kyushu University
Osamu MUTA
  Kyushu University
Maha ELSABROUTY
  Egypt-Japan University of Science and Technology

Keyword

interference alignment, heterogeneous networks, degrees of freedom, rank constrained rank minimization

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Ahmed M. BENAYA, Osamu MUTA, Maha ELSABROUTY, "Performance Analysis of Weighted Rank Constrained Rank Minimization Interference Alignment for Three-Tier Downlink Heterogeneous Networks" in IEICE TRANSACTIONS on Communications, vol. E103-B, no. 3, pp. 262-271, March 2020, doi: 10.1587/transcom.2019EBP3084.
Abstract: Heterogeneous networks (HetNets) technology is expected to be applied in next generation cellular networks to boost system capacity. However, applying HetNets introduces a significant amount of interference among different tiers within the same cell. In this paper, we propose a weighted rank constrained rank minimization (WRCRM) based interference alignment (IA) approach for three-tier HetNets. The concept of RCRM is applied in a different way to deal with the basic characteristic of different tiers: their different interference tolerance. In the proposed WRCRM approach, interference components at different tiers are weighted with different weighting factors (WFs) to reflect their vulnerability to interference. First, we derive an inner and a loose outer bound on the achievable degrees of freedom (DoF) for the three-tier system that is modeled as a three-user mutually interfering broadcast channel (MIBC). Then, the derived bounds along with the well-known IA feasibility conditions are used to show the effectiveness of the proposed WRCRM approach. Results show that there exist WF values that maximize the achievable interference-free dimensions. Moreover, adjusting the required number of DoF according to the derived bounds improves the performance of the WRCRM approach.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2019EBP3084/_p

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@ARTICLE{e103-b_3_262,
author={Ahmed M. BENAYA, Osamu MUTA, Maha ELSABROUTY, },
journal={IEICE TRANSACTIONS on Communications},
title={Performance Analysis of Weighted Rank Constrained Rank Minimization Interference Alignment for Three-Tier Downlink Heterogeneous Networks},
year={2020},
volume={E103-B},
number={3},
pages={262-271},
abstract={Heterogeneous networks (HetNets) technology is expected to be applied in next generation cellular networks to boost system capacity. However, applying HetNets introduces a significant amount of interference among different tiers within the same cell. In this paper, we propose a weighted rank constrained rank minimization (WRCRM) based interference alignment (IA) approach for three-tier HetNets. The concept of RCRM is applied in a different way to deal with the basic characteristic of different tiers: their different interference tolerance. In the proposed WRCRM approach, interference components at different tiers are weighted with different weighting factors (WFs) to reflect their vulnerability to interference. First, we derive an inner and a loose outer bound on the achievable degrees of freedom (DoF) for the three-tier system that is modeled as a three-user mutually interfering broadcast channel (MIBC). Then, the derived bounds along with the well-known IA feasibility conditions are used to show the effectiveness of the proposed WRCRM approach. Results show that there exist WF values that maximize the achievable interference-free dimensions. Moreover, adjusting the required number of DoF according to the derived bounds improves the performance of the WRCRM approach.},
keywords={},
doi={10.1587/transcom.2019EBP3084},
ISSN={1745-1345},
month={March},}

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TY - JOUR
TI - Performance Analysis of Weighted Rank Constrained Rank Minimization Interference Alignment for Three-Tier Downlink Heterogeneous Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 262
EP - 271
AU - Ahmed M. BENAYA
AU - Osamu MUTA
AU - Maha ELSABROUTY
PY - 2020
DO - 10.1587/transcom.2019EBP3084
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E103-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2020
AB - Heterogeneous networks (HetNets) technology is expected to be applied in next generation cellular networks to boost system capacity. However, applying HetNets introduces a significant amount of interference among different tiers within the same cell. In this paper, we propose a weighted rank constrained rank minimization (WRCRM) based interference alignment (IA) approach for three-tier HetNets. The concept of RCRM is applied in a different way to deal with the basic characteristic of different tiers: their different interference tolerance. In the proposed WRCRM approach, interference components at different tiers are weighted with different weighting factors (WFs) to reflect their vulnerability to interference. First, we derive an inner and a loose outer bound on the achievable degrees of freedom (DoF) for the three-tier system that is modeled as a three-user mutually interfering broadcast channel (MIBC). Then, the derived bounds along with the well-known IA feasibility conditions are used to show the effectiveness of the proposed WRCRM approach. Results show that there exist WF values that maximize the achievable interference-free dimensions. Moreover, adjusting the required number of DoF according to the derived bounds improves the performance of the WRCRM approach.
ER -