Energy-Efficient Signalling in QoS Constrained Heterogeneous Networks
This paper considers a heterogeneous network, which consists of one macro base station and numerous small cell base stations (SBSs) cooperatively serving multiple user terminals. The first objective is to design cooperative transmit beamformers at the base stations to maximize the network energy eff...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7738444/ |
| _version_ | 1818415389296558080 |
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| author | Long D. Nguyen Hoang Duong Tuan Trung Q. Duong |
| author_facet | Long D. Nguyen Hoang Duong Tuan Trung Q. Duong |
| author_sort | Long D. Nguyen |
| collection | DOAJ |
| description | This paper considers a heterogeneous network, which consists of one macro base station and numerous small cell base stations (SBSs) cooperatively serving multiple user terminals. The first objective is to design cooperative transmit beamformers at the base stations to maximize the network energy efficiency (EE) in terms of bits per joule subject to the users' quality of service (QoS) constraints, which poses a computationally difficult optimization problem. The commonly used Dinkelbach-type algorithms for optimizing a ratio of concave and convex functions are not applicable. This paper develops a path-following algorithm to address the computational solution to this problem, which invokes only a simple convex quadratic program of moderate dimension at each iteration and quickly converges at least to a locally optimal solution. Furthermore, the problem of joint beamformer design and SBS service assignment in the three-objective (EE, QoS, and service loading) optimization is also addressed. Numerical results demonstrate the performance advantage of the proposed solutions. |
| first_indexed | 2024-12-14T11:34:13Z |
| format | Article |
| id | doaj.art-53ece5476b9f4c8187401d62be376b9e |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-14T11:34:13Z |
| publishDate | 2016-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-53ece5476b9f4c8187401d62be376b9e2022-12-21T23:03:08ZengIEEEIEEE Access2169-35362016-01-0147958796610.1109/ACCESS.2016.26263637738444Energy-Efficient Signalling in QoS Constrained Heterogeneous NetworksLong D. Nguyen0Hoang Duong Tuan1Trung Q. Duong2https://orcid.org/0000-0002-4703-4836Queen’s University Belfast, Belfast, U.K.University of Technology Sydney, Sydney, NSW, AustraliaQueen’s University Belfast, Belfast, U.K.This paper considers a heterogeneous network, which consists of one macro base station and numerous small cell base stations (SBSs) cooperatively serving multiple user terminals. The first objective is to design cooperative transmit beamformers at the base stations to maximize the network energy efficiency (EE) in terms of bits per joule subject to the users' quality of service (QoS) constraints, which poses a computationally difficult optimization problem. The commonly used Dinkelbach-type algorithms for optimizing a ratio of concave and convex functions are not applicable. This paper develops a path-following algorithm to address the computational solution to this problem, which invokes only a simple convex quadratic program of moderate dimension at each iteration and quickly converges at least to a locally optimal solution. Furthermore, the problem of joint beamformer design and SBS service assignment in the three-objective (EE, QoS, and service loading) optimization is also addressed. Numerical results demonstrate the performance advantage of the proposed solutions.https://ieeexplore.ieee.org/document/7738444/Heterogeneous networksenergy efficiencyQoS constraintservice loadingfractional programmingpath-following method |
| spellingShingle | Long D. Nguyen Hoang Duong Tuan Trung Q. Duong Energy-Efficient Signalling in QoS Constrained Heterogeneous Networks IEEE Access Heterogeneous networks energy efficiency QoS constraint service loading fractional programming path-following method |
| title | Energy-Efficient Signalling in QoS Constrained Heterogeneous Networks |
| title_full | Energy-Efficient Signalling in QoS Constrained Heterogeneous Networks |
| title_fullStr | Energy-Efficient Signalling in QoS Constrained Heterogeneous Networks |
| title_full_unstemmed | Energy-Efficient Signalling in QoS Constrained Heterogeneous Networks |
| title_short | Energy-Efficient Signalling in QoS Constrained Heterogeneous Networks |
| title_sort | energy efficient signalling in qos constrained heterogeneous networks |
| topic | Heterogeneous networks energy efficiency QoS constraint service loading fractional programming path-following method |
| url | https://ieeexplore.ieee.org/document/7738444/ |
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