论文标题
FDMA-urllC下行链路的功率分配，随机通道分配
Power Allocation for FDMA-URLLC Downlink with Random Channel Assignment
论文作者
论文摘要
关于在频道多访问中使用随机通道分配的下链路运行的下行链路的超级低延迟通信（URLLC），提出了一种轻巧的功率分配方法，以最大程度地提高受传播功率和个体用户可靠性约束的URLLC用户数量。在发射器（CSIT）提供了完美的频道状态，该方法已被证明是确保最大化URLLC用户的。假设CSIT不完美，建议的方法仍然旨在通过使用对渠道增益的悲观评估来最大化URLLC用户而不损害单个用户的可靠性。通过数值结果证明，所提出的方法可以显着提高瑞利褪色通道中的用户能力和发射功率效率。借助不完美的CSIT，提出的方法仍然可以以有限成本的发送功率效率提供出色的用户容量。
Concerning ultra-reliable low-latency communication (URLLC) for the downlink operating in the frequency-division multiple-access with random channel assignment, a lightweight power allocation approach is proposed to maximize the number of URLLC users subject to transmit-power and individual user-reliability constraints. Provided perfect channel-state-information at the transmitter (CSIT), the proposed approach is proven to ensure maximized URLLC users. Assuming imperfect CSIT, the proposed approach still aims to maximize the URLLC users without compromising the individual user reliability by using a pessimistic evaluation of the channel gain. It is demonstrated, through numerical results, that the proposed approach can significantly improve the user capacity and the transmit-power efficiency in Rayleigh fading channels. With imperfect CSIT, the proposed approach can still provide remarkable user capacity at limited cost of transmit-power efficiency.
