Optimal Transmission Power Control and D2D-Relay Selection for NOMA Wireless Networks
碩士 === 國立交通大學 === 電信工程研究所 === 104 === In this thesis, we use superposition coding and the Non-orthogonal multiple access (NOMA) technology to propose a novel algorithm under Deviceto-Device(D2D) communication in unicast scheme. According to the channel capacity, the transmission rate is limited by t...
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| Format: | Others |
| Language: | en_US |
| Published: |
2016
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| Online Access: | http://ndltd.ncl.edu.tw/handle/67770816548495061775 |
| Summary: | 碩士 === 國立交通大學 === 電信工程研究所 === 104 === In this thesis, we use superposition coding and the Non-orthogonal multiple access (NOMA) technology to propose a novel algorithm under Deviceto-Device(D2D) communication in unicast scheme. According to the channel capacity, the transmission rate is limited by the channel gain and the distance of the destination user equipment (UE). To improve the transmission rate of the cell-edge UEs, we use superposition coding and relay-assisted D2D communication to increase the transmission rate and the base station coverage. Based on channel state information and superposition coding theory, the proposed algorithm maximize the network throughput by dynamically selecting the relays and optimally allocating power for different UEs. We use the result of the proposed problem formulation to decrease the computational complexity caused by power allocation and relay selection under NOMA system. Furthermore, we consider the cases under the base station equipped with one antennas and multiple antennas. Simulation results show that the proposed algorithm can efficiently improve network throughput.
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