Fast Resource Allocation for Downlink Non-Orthogonal Multiple Access in Mobile Networks

• Main Authors: Huang, Yu-Wen, 黃郁雯
• Other Authors: Kao, Jung-Chun
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/7h8xts

碩士 === 國立清華大學 === 資訊工程學系所 === 106 === Non-orthogonal multiple access (NOMA) has been considered as a promising radio access technique for the future mobile networks due to its superior spectrum efficiency. In this thesis, we consider a downlink NOMA system. We model the interaction between the base station and multiple users as a Stackelberg game and then propose a fast resource allocation algorithm, which consists of power allocation and resource allocation, to maximize the number of satisfied user equipment while seeking to enhance the revenue of the base station. Given a NOMA pair, we derive a closed-form solution for the optimal power allocation. And we convert the resource allocation problem into the problem of finding a maximum weight independent set in a chordal graph and thus can use a linear-time algorithm to find a maximum weight independent set. Simulation results show that proposed fast resource allocation algorithm outperforms the compared NOMA algorithms in terms of the number of satisfied user equipment and the system total throughput.