Pilot coverage optimization for cellular network by joint beamforming of multiple sectors

Wu, Zhouyun; Huang, Aiping; Fan, Dongdong; Quek, Tony Q. S.

doi:10.1109/wocc.2013.6676367

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…Choosing JEPD is mainly because transmission power adjustment and downtilt adjustment are commonly used two technologies for coverage control [2], [13], joint exhaustion of transmission power and downtilt gives the best coverage effect that can be achieved by using the existing methods.…”

Section: B Baseline Algorithmmentioning

confidence: 99%

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Three-dimensional coverage control of common control signals for cellular networks

Wang

Huang

Fan

et al. 2014

2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC)

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Rapid increase of large-scale high-rise structures results in three-dimensional distribution of wireless traffic, and thus raises a new demand of three-dimensional coverage of the common control signals in cellular mobile communication networks. The control approach of three-dimensional coverage is investigated in this paper, based on planar array of macro basestation and three-dimensional beamforming technology. A novel algorithm is proposed for obtaining the excitation weight matrix of planar array. Coverage requirement is extracted according to the target coverage distances and the actual landforms in different directions, and then mapped into an anisotropic desired array pattern. The optimization model is established as a joint minimization of array pattern design error and transmission power. An approximately optimal tradeoff coefficient and the corresponding weight matrix are solved through iteration. Numerical results validate that the proposed algorithm has the advantages of excellent coverage performance, considerable saving of transmission power and effective suppression of intercell interference.

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Section: B Baseline Algorithmmentioning

confidence: 99%

“…Most of the existing researches on cell coverage control technology focus on the problem of ground coverage [2][3][4]. With the developments of urbanization and three-dimensional transportation, large-scale three-dimensional structures such as viaducts, overpasses and high-rise buildings increase rapidly in recent years.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional coverage control of common control signals for cellular networks

Wang

Huang

Fan

et al. 2014

2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC)

Self Cite

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“…Thus, we may drop Eq. (13e) to obtain the SDR of Problem (13), and then obtain the optimal solution {W} opt by using convex optimization toolbox.…”

Section: A Problem Solvingmentioning

confidence: 99%

“…From the procedure of HEIS algorithm, we find the computational complexity mainly comes from the solving of problem (13), which has a worst-case complexity of O max {m, n} 4 n 1/2 log (1/ε) [7]. Where, m is the number of constraint conditions in Eqs.…”

Section: B Algorithm Implementationmentioning

confidence: 99%

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Three-dimensional coverage control of common control signals for coverage holes elimination and interference suppression

Wang

Huang

2014

2014 Sixth International Conference on Wireless Communications and Signal Processing (WCSP)

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A new demand of three-dimensional (3D) coverage of wireless signals is arising, since the wireless traffics are gradually distributed in 3D space in the processes of urbanization and high-rise building's popularization. In this paper, 3D coverage control technology based on planar array antenna and 3D beamforming is investigated, and a novel control algorithm HEIS is proposed. Starting from the key performance metrics, i.e., weak coverage ratio (WCR), interference level (IL) and transmission power, an optimization model is established to minimize the transmission power with the constraints of zero WCR and zero IL. Semi-definite relaxation, randomization and compensation adjustment are adopted step by step to obtain suboptimal excitation weights for feeding planar array antenna. It is validated through simulation that the proposed HEIS algorithm outperforms the antenna power-downtilt joint adjustment method in coverage hole elimination, inter-cell interference suppression and energy saving obviously.

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Energy efficient cell load-aware coverage optimization for small-cell networks

Agustín

Lagén

Vidal

2015

2015 IEEE International Conference on Communications (ICC)

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Self-organizing network is a new capability envisioned for the near-future wireless cellular networks. Among the different use cases, here we tackle the coverage optimization with the objective of adjusting the power devoted for the pilot signal as a function of the load of the different small Node Bs (SNBs). The optimization is done with the objective of minimizing the total transmitted power for the pilot signals in the network, leading to a switch on/off SNBs solution as a particular case. In this paper we present a decentralized algorithm that is executed at UEs and SNBs, exploiting the messages reported by UEs.Peer ReviewedPostprint (published version

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Pilot coverage optimization for cellular network by joint beamforming of multiple sectors

Cited by 4 publications

References 8 publications

Three-dimensional coverage control of common control signals for cellular networks

Three-dimensional coverage control of common control signals for cellular networks

Three-dimensional coverage control of common control signals for coverage holes elimination and interference suppression

Energy efficient cell load-aware coverage optimization for small-cell networks

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