NDLI: Energy-efficient cooperative transmission in heterogeneous networks

Content Provider	IEEE Xplore Digital Library
Author	Zhikun Xu Chenyang Yang Li, G.Y. Yalin Liu Shugong Xu
Copyright Year	2013
Description	Author affiliation: GREAT Res. Team, Huawei Technol. Co. Ltd., Shanghai, China (Yalin Liu; Shugong Xu) \|\| Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA (Li, G.Y.) \|\| Sch. of Electron. & Inf. Eng., Beihang Univ., Beijing, China (Zhikun Xu; Chenyang Yang)
Abstract	In this paper, we investigate an energy-efficient coordinated multiple point (CoMP) transmission strategy for downlink heterogeneous cellular networks. We combine CoMP joint processing (CoMP-JP) and coordinated beamforming (CoMP-CB), two special cases of CoMP, in a time division manner to improve both energy efficiency (EE) and spectral efficiency (SE). We formulate the problem as minimizing the total transmit power consumed by both the macro- and pico-base stations (BSs) under the constraints on the data rate requirements from the macro- and pico-users, and on the maximum transmit powers of the macro- and pico-BSs. Both the transmit time and the transmit powers allocated to the CoMP-JP and CoMP-CB transmissions are optimized. Simulation results show that the hybrid CoMP-JP and CoMP-CB strategy provides a larger capacity region than the CoMP-JP-only or CoMP-CB-only transmission. The time proportion of the CoMP-JP in the hybrid strategy decreases with the data rate requirement of the macro-user and increases with the maximum transmit power of the pico-BS and the average channel gain from the macro-BS to the macro-user. Increasing the transmit power of the pico-BS can improve the EE in the high SE region of the macro-user.
Starting Page	4226
Ending Page	4231
File Size	465001
Page Count	6
File Format	PDF
ISBN	9781467359382
ISSN	15253511
e-ISBN	9781467359399
e-ISBN	9781467359375
DOI	10.1109/WCNC.2013.6555256
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hybrid power systems Vectors Noise Transmission line matrix methods Gain Educational institutions Optimization
Content Type	Text
Resource Type	Article

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