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Energy Efficiency Maximized Resource Allocation for Opportunistic Relay-Aided OFDMA Downlink with Subcarrier Pairing
Joint Authors
Wang, Tao
Sun, Yanzan
Zhang, Shunqing
Ma, Chao
Wu, Yating
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-05-29
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Information Technology and Computer Science
Abstract EN
This paper studies the energy efficiency (EE) maximization for an orthogonal frequency division multiple access (OFDMA) downlink network aided by a relay station (RS) with subcarrier pairing.
A highly flexible transmission protocol is considered, where each transmission is executed in two time slots.
Every subcarrier in each slot can either be used in direct mode or be paired with a subcarrier in another slot to operate in relay mode.
The resource allocation (RA) in such a network is highly complicated, because it has to determine the operation mode of subcarriers, the assignment of subcarriers to users, and the power allocation of the base station and RS.
We first propose a mathematical description of the RA strategy.
Then, a RA algorithm is derived to find the globally optimum RA to maximize the EE.
Finally, we present extensive numerical results to show the impact of minimum required rate of the network, the user number, and the relay position on the maximum EE of the network.
American Psychological Association (APA)
Wang, Tao& Ma, Chao& Sun, Yanzan& Zhang, Shunqing& Wu, Yating. 2018. Energy Efficiency Maximized Resource Allocation for Opportunistic Relay-Aided OFDMA Downlink with Subcarrier Pairing. Wireless Communications and Mobile Computing،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1216372
Modern Language Association (MLA)
Wang, Tao…[et al.]. Energy Efficiency Maximized Resource Allocation for Opportunistic Relay-Aided OFDMA Downlink with Subcarrier Pairing. Wireless Communications and Mobile Computing No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1216372
American Medical Association (AMA)
Wang, Tao& Ma, Chao& Sun, Yanzan& Zhang, Shunqing& Wu, Yating. Energy Efficiency Maximized Resource Allocation for Opportunistic Relay-Aided OFDMA Downlink with Subcarrier Pairing. Wireless Communications and Mobile Computing. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1216372
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1216372