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Resource Allocation...
Resource Allocation for Energy-Efficient NOMA System in Coordinated Multi-Point Networks
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- Muhammed, Alemu Jorgi (författare)
- Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China.;Wollo Univ, Sch Informat, Dessie 1145, Ethiopia.
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- Ma, Zheng (författare)
- Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China.
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- Ding, Zhiguo (författare)
- Univ Manchester, Dept Elect & Elect Engn, Manchester M13 9PL, Lancs, England.
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- Xiao, Ming, 1975- (författare)
- KTH,Teknisk informationsvetenskap,ACCESS Linnaeus Centre
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- Fan, Pingzhi (författare)
- Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China.
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- Xu, Weiqiang (författare)
- Zhejiang Sci Tech Univ, Sch Informat Sci & Technol, Hangzhou 310018, Peoples R China.
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- Liu, Gang (författare)
- Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China.
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- Zhang, Zhengquan (författare)
- Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China.
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Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China;Wollo Univ, Sch Informat, Dessie 1145, Ethiopia. Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China. (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2021
- 2021
- Engelska.
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Ingår i: IEEE Transactions on Vehicular Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 0018-9545 .- 1939-9359. ; 70:2, s. 1577-1591
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This paper studies user scheduling and power allocation problem to maximize the energy efficiency (EE) for non-orthogonal multiple access (NOMA) in downlink Coordinated Multi-Point networks. In the proposed framework, a more practical scenario the imperfect channel state information, imperfect successive interference cancellation and data outage are investigated. To address the considered problem, the optimization problem is formulated constrained by the total power and the outage probability requirements. However, the EE objective function is with a non-convex structure. Accordingly, we first convert the optimization problem to make the objective function concave and analytically tractable. Furthermore, we split the joint optimization problem to find a suboptimal solutions to the original problem. As a result, we first propose a suboptimal user-scheduling algorithm to improve the system's EE. Due to the non-convex function of the transmit power, we invoke a sequential successive convex approach to address the non-convex problem by its lower bound concave function. Besides, the fractional objective function is converted to its equivalent subtractive form. Finally, we derive a power control scheme to address the proposed framework. Simulation results endorse the effectiveness of the proposed algorithm and their performance gains in terms of EE compared to both NOMA and OFDMA variants.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- NOMA
- Optimization
- Resource management
- Wireless communication
- Quality of service
- Power control
- Linear programming
- Successive interference cancellation
- outage probability
- energy efficiency
- power allocation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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