User Fairness Aware Power Allocation for NOMA-Assisted Video Transmission With Adaptive Quality Adjustment
User Fairness Aware Power Allocation for NOMA-Assisted Video Transmission With Adaptive Quality Adjustment
复制标题
具有自适应质量调整功能的 NOMA 辅助视频传输的用户公平感知功率分配
DOI:
10.1109/tvt.2021.3129805
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发表时间:
2022-01
影响因子:
6.8
通讯作者:
Pingzhi Fan
中科院分区:
文献类型:
--
作者:
Sangsha Fang;Hongyang Chen;Zahid Hussain Khan;Pingzhi Fan
In this paper, we investigate the user fairness power allocation (PA) for video transmission in a non-orthogonal multiple access (NOMA)-assisted wireless system with a pair of users. Considering that video transmission is usually delay-sensitive, the video quality can be adaptively adjusted based on the network conditions. First, a new performance metric, called the average video quality degradation probability, is proposed to describe the adaptive video quality. Then, based on the principles of NOMA and user queue model, the average video quality degradation probability of both users is derived. Next, a bisection search based power allocation (PA) algorithm is proposed to balance the video quality between the NOMA pair. Simulation results demonstrate that the proposed NOMA scheme is more effective to achieve the user fairness compared with the fixed NOMA scheme, the fractional transmit power allocation (FTPA) based NOMA scheme, the achievable rate fairness (ARF) NOMA scheme, and the optimized time division multiple access (TDMA) scheme.
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