论文标题
超可靠的MMWave两射线通道的多用户频率分配
Multi-User Frequency Assignment for Ultra-Reliable mmWave Two-Ray Channels
论文作者
论文摘要
我们考虑一个多用户两射线地面反射方案，发射器和接收器之间的距离未知。通过并行使用每个用户的两个频率，我们可以减轻可能的破坏性干扰，并在发射机上仅具有非常有限的知识来确保超可易性。在这项工作中，我们考虑了在多用户通信系统中为每个接收器分配两个频率的问题，以使平均最小接收功率最大化。为了解决这个问题，我们引入了二次多背包问题的概括，以包括异质利润并开发算法来解决它。与随机频率分配相比，我们报告了数值模拟中大约6 dB的增益。
We consider a multi-user two-ray ground reflection scenario with unknown distances between transmitter and receivers. By using two frequencies per user in parallel, we can mitigate possible destructive interference and ensure ultra-reliability with only very limited knowledge at the transmitter. In this work, we consider the problem of assigning two frequencies to each receiver in a multi-user communication system such that the average minimum receive power is maximized. In order to solve this problem, we introduce a generalization of the quadratic multiple knapsack problem to include heterogeneous profits and develop an algorithm to solve it. Compared to random frequency assignment, we report a gain of around 6 dB in numerical simulations.
