未来无线网络下的空中计算技术

Over-the-Air Computation for Future Networks

空中计算提供了一种通信和计算一体化的架构,在不需要恢复出每个节点个体数据的前提下,通过所有节点的并发传输,利用无线信道的叠加特性,实现目标函数在空口信道中的直接运算。空中计算可以在通信容量受限的计算场景下,减少由于先传输再计算而造成的巨大传输时延。介绍无线网络中空中计算技术的基本原理,同时针对实现计算过程的关键技术展开讨论。

Over-the-air computation provides a novel communication and computation integrated architecture. Without recovering individual node’s data, it utilizes the summation property of wireless channel to compute the target function directly with all nodes’ concurrent transmission. Thus, over-the-air computation can reduce the transmission delay in communication-constrained computation scenario. This paper introduces the principle of over-the-air computation, and discusses the key technologies of its implementation.