论文标题
两用户系统的NOMA设计与电力冲突权衡
NOMA Design with Power-Outage Tradeoff for Two-User Systems
论文作者
论文摘要
这封信提出了一种针对具有多个ANTENNA基站（BS）和两个单个Antenna用户的系统的修改的非正交多辅助（NOMA）方案，在该方案中，只有在绝对相关系数（CC）之间仅在用户频道之间使用A Threshold，并且BS使用A Threshold，并且使用A threshold频道超过了强度（MF），则进行NOMA传输。我们得出了平均最小传输功率，以确保两个用户的信噪比差异（SINR）水平。我们的结果表明，平均最小功率在CC阈值的倒数中对数增长，而修改后的NOMA方案必须具有有限的平均最小传输功率，因此需要非零的阈值。此外，对于大规模的MIMO场景，我们得出了相对于天线数字及其权衡法的平均发射功率和中断概率的缩放定律。模拟结果显示出验证我们的理论结果。
This letter proposes a modified non-orthogonal multiple-access (NOMA) scheme for systems with a multi-antenna base station (BS) and two single-antenna users, where NOMA transmissions are conducted only when the absolute correlation coefficient (CC) between the user channels exceeds a threshold and the BS uses matched-filter (MF) precoding along the user with the stronger average channel gain. We derive the average minimal transmit power to guarantee the signal-to-interference-plus-noise-ratio (SINR) levels of both users. Our results show that the average minimal power grows logarithmically in the reciprocal of the CC threshold and a non-zero threshold is necessary for the modified NOMA scheme to have finite average minimal transmit power. Further, for the massive MIMO scenario, we derive the scaling laws of the average transmit power and outage probability with respect to the antenna numbers, as well as their tradeoff law. Simulation results are shown to validate our theoretical results.
