论文标题
在两路褪色通道中超可靠通信的有效频率多样性方案
An Efficient Frequency Diversity Scheme for Ultra-Reliable Communications in Two-Path Fading Channels
论文作者
论文摘要
我们考虑了两射线地面反射方案，发射器和接收器之间的距离未知。通过并行利用两个频率，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率。为了实现这种超可责任，我们优化了频率间距，使得最坏情况接收功率是最大化的。此外，我们提供了一种算法来计算最佳频率间距。除了接收功率外，我们还分析了可实现的速率和中断概率。结果表明，使用单个频率，频率多样性方案在可靠性方面取得了重大提高。特别是，我们通过对飞行平坦的无人机（UAV）的数值模拟来证明所提出的方法的有效性。
We consider a two-ray ground reflection scenario with unknown distance between transmitter and receiver. By utilizing two frequencies in parallel, we can mitigate possible destructive interference and ensure ultra-reliability with only very limited knowledge at the transmitter. In order to achieve this ultra-reliability, we optimize the frequency spacing such that the worst-case receive power is maximized. Additionally, we provide an algorithm to calculate the optimal frequency spacing. Besides the receive power, we also analyze the achievable rate and outage probability. It is shown that the frequency diversity scheme achieves a significant improvement in terms of reliability over using a single frequency. In particular, we demonstrate the effectiveness of the proposed approach by a numerical simulation of an unmanned aerial vehicle (UAV) flying above flat terrain.
