This study introduces a novel non-coherent over-the-air computation (OAC) scheme aimed at achieving reliable majority vote (MV) calculations in fading channels. The proposed approach relies on modulating the amplitude of the elements of complementary sequences (CSs) based on the sign of the parameters to be aggregated. Notably, our method eliminates the reliance on channel state information at the nodes, rendering it compatible with time-varying channels. To demonstrate the efficacy of our approach, we employ it in a scenario where an unmanned aerial vehicle (UAV) is guided by distributed sensors, relying on the MV computed using our proposed scheme. The experimental results confirm the superiority of our approach, as evidenced by a significant reduction in computation error rates in fading channels, particularly with longer sequence lengths. Meanwhile, we ensure that the peak-to-mean-envelope power ratio of the transmitted orthogonal frequency division multiplexing signals remains within or below 3 dB.

翻译：本研究提出一种新颖的非相干空中计算（OAC）方案，旨在衰落信道中实现可靠的多数投票（MV）计算。该方法基于待聚合参数的正负号，通过调制互补序列（CSs）元素的幅度来实现。值得注意的是，该方案消除了节点对信道状态信息的依赖，使其能够适应时变信道。为验证所提方法的有效性，我们将其应用于由分布式传感器引导的无人飞行器（UAV）制导场景中，依赖基于所提方案计算的多数投票进行决策。实验结果表明，该方法在衰落信道中的计算误码率显著降低，尤其在使用更长序列长度时优势更为明显。同时，我们确保传输的正交频分复用信号峰值均值包络功率比始终保持在3分贝以内或以下。