[1] Tong En, Gong Shulei, Pan Zhiwen, You Xiaohu, et al. CoMP-transmission-based energy-efficient schemeselection algorithm for LTE-A systems [J]. Journal of Southeast University (English Edition), 2015, 31 (3): 297-303. [doi:10.3969/j.issn.1003-7985.2015.03.001]

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CoMP-transmission-based energy-efficient schemeselection algorithm for LTE-A systems()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

31

Issue:

2015 3

Page:

297-303

Research Field:

Information and Communication Engineering

Publishing date:

2015-09-20

Info

Title:

CoMP-transmission-based energy-efficient schemeselection algorithm for LTE-A systems

Author(s):

Tong En¹;  Gong Shulei²;  Pan Zhiwen¹;  You Xiaohu¹

¹National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
²School of Electronic Science and Engineering, Nanjing University, Nanjing 210013, China

Keywords:

energy efficiency;  green radio;  coordinated multipoint;  scheme selection;  nonlinear fractional programming

PACS:

TN91

DOI:

10.3969/j.issn.1003-7985.2015.03.001

Abstract:

In order to achieve higher system energy efficiency(EE), a new coordinated multipoint(CoMP)-transmission-based scheme selection energy saving(CTSES)algorithm is proposed for downlink homogeneous cellular networks. The problem is formulated as an optimization of maximizing system EE, under the constraints of the data rate requirement and the maximum transmit power. The problem is decomposed into power allocation and alternative scheme selection problems. Optimal power allocation is calculated for CoMP-JT(joint transmission)and CoMP-CS(coordinated scheduling)transmissions, and the scheme with higher EE is chosen. Since the optimal problem is a nonlinear fractional optimization problem for both CoMP transmission schemes, the problem is transformed into an equivalent problem using the parametric method. The optimal transmit power and optimal EE are obtained by an iteration algorithm in CoMP-JT and CoMP-CS schemes. Simulation results show that the proposed algorithm offers obvious energy-saving potential and outperforms the fixed CoMP transmission scheme. Under the condition of the same maximum transmit power limit, the empirical regularity of user distribution for scheme choice is presented, and using this regularity, the computational complexity can be reduced.

References:

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Memo

Memo:

Biographies: Tong En(1971—), male, doctor; Pan Zhiwen(corresponding author), male, doctor, professor, pzw@seu.edu.cn.
Foundation items: The National Science and Technology Major Project(No.2013ZX03001032-004), the National High Technology Research and Development Program of China(863 Program)(No.2014AA01A702), Jiangsu Province Science and Technology Support Program(No. BE2012165), Foundation of Huawei Corp. Ltd.
Citation: Tong En, Gong Shulei, Pan Zhiwen, et al. CoMP-transmission-based energy-efficient scheme selection algorithm for LTE-A systems[J].Journal of Southeast University(English Edition), 2015, 31(3):297-303.[doi:10.3969/j.issn.1003-7985.2015.03.001]

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