Reliable Majority Vote Computation with Complementary Sequences for UAV Waypoint Flight Control

TL;DR

This paper introduces a non-coherent over-the-air computation method using complementary sequences to reliably compute majority votes in fading channels, suitable for UAV sensor networks.

Contribution

It presents a novel amplitude modulation scheme based on complementary sequences that does not require channel state information, enhancing reliability in dynamic environments.

Findings

Reduces computation error rate in fading channels

Maintains low peak-to-mean-envelope power ratio

Effective in UAV waypoint control scenarios

Abstract

In this study, we propose a non-coherent over-the-air computation scheme to calculate the majority vote (MV) reliably in fading channels. The proposed approach relies on modulating the amplitude of the elements of complementary sequences based on the sign of the parameters to be aggregated. Since it does not use channel state information at the nodes, it is compatible with time-varying channels. To demonstrate the efficacy of our method, we employ it in a scenario where an unmanned aerial vehicle is guided by distributed sensors, relying on the MV computed using our proposed scheme. We show that the proposed scheme notably reduces the computation error rate with a longer sequence length in fading channels while maintaining the peak-to-mean-envelope power ratio of the transmitted orthogonal frequency division multiplexing signals to be less than or equal to 3 dB.