Multiuser Beamforming for Simultaneous Information and Energy Transmission in Wireless Relay Networks
碩士 === 國立交通大學 === 電信工程研究所 === 106 === Simultaneous wireless information and energy transmission has become more popular in recent years. In this thesis, we try to find the multiuser beamforming vectors and power splitting ratios of flexible two phases design in a decode-and-forward (DF) relay networ...
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| Format: | Others |
| Language: | en_US |
| Published: |
2018
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| Online Access: | http://ndltd.ncl.edu.tw/handle/3c67z9 |
| Summary: | 碩士 === 國立交通大學 === 電信工程研究所 === 106 === Simultaneous wireless information and energy transmission has become
more popular in recent years. In this thesis, we try to find the multiuser
beamforming vectors and power splitting ratios of flexible two phases design
in a decode-and-forward (DF) relay networks. We formulate this problem
as a sum rate maximization problem under some constraints, where multiple
users are separated based on the distance from BS and some of near users
can harvest energy to forward the information to far users. Although this
optimization is a non-convex problem, some useful properties are found. We
proposed an iterative Newton-Raphson algorithm with learning rate to deal
with this problem. The simulation results show that our proposed algorithm
need much less time to get a near convergence solution comparing to maximum
value of random selections method in sacrifice of some performance.
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