Decentralized Beamforming for Location-Aware SWIPT in Coordinated Multi-Cell Networks

Zong, Zhiyuan; Feng, Hui; Yuan, Yiling; Yang, Tao; Hu, Bo

doi:10.1109/glocom.2015.7417059

Cited by 3 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, most of the SWIPT research studies are focusing on the singlecell scenario, such as in [18][19][20][21]. There is also a few of literature studied the multi-cell scenario [22].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A novel joint transmit beamforming and receive time switching strategy for MISO SWIPT system

Wang

et al. 2018

J Wireless Com Network

View full text Add to dashboard Cite

In multi-antenna simultaneous wireless information and power transfer (SWIPT) system, beamforming strategy has been widely analyzed due to the increasing signal strength. It can not only increase the signal strength in the direction of the antenna array but also reduce the interference strength, which is a good option for SWIPT system to achieve directional transmission of information and energy. However, the traditional beamforming strategy only uses single beamforming vector, and it does not consider the differences between information and energy in SWIPT system. Actually, interference can also be collected as energy. Based on the traditional beamforming strategy, the resources in SWIPT system are not properly utilized. Therefore, this paper proposes a joint beamforming strategy in multi-input and single-output (MISO) SWIPT system. We extend the traditional single beamforming vector into two beamforming vectors to realize independent control of information and energy based on time switching (TS) receiving mode. In information receiving phase, information beamforming vector is used to carry specific user's information for information alignment. Since there is an orthogonal relationship between information beamforming vector and channel gain vector, we can achieve to eliminate interference and realize error-free information transmission. In energy receiving phase, energy beamforming vector is used to carry user's energy. Energy beamforming vector and channel gain vector do not require the orthogonality so that the interference can also be collected as energy. In this paper, we model it as a transmission power optimization (TPO) problem, which is a complex non-convex problem. We firstly transform it into a convex problem, and then, it can be solved using CVX toolbox. Simulation results show that the proposed strategy could increase the energy collection at the same transmission power and also decrease the transmission power at the same energy collection.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Most of the literature available studied the co-channel receiver. Particularly, [22] studied the nonco-channel receiver, whose energy and information are actually not simultaneously transmitted. In addition, most of the SWIPT research studies are focusing on the singlecell scenario, such as in [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%