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arXiv · 2211.07204

Multi-User Frequency Assignment for Ultra-Reliable mmWave Two-Ray Channels

Karl-Ludwig Besser·Eduard A. Jorswieck·Justin P. Coon
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Abstract

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.

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Karl-Ludwig Besser, Eduard A. Jorswieck, Justin P. Coon. 2022-11-14. Multi-User Frequency Assignment for Ultra-Reliable mmWave Two-Ray Channels. https://doi.org/10.23919/wiopt56218.2022.9930571

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