使用正交调制的空气中短距离超声通信。

Short-range ultrasonic communications in air using quadrature modulation.

机构信息

Sch. of Eng., Univ. of Warwick, Coventry, UK.

出版信息

IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Oct;56(10):2060-72. doi: 10.1109/TUFFC.2009.1289.

DOI:10.1109/TUFFC.2009.1289

PMID:19942494

Abstract

A study has been undertaken of ultrasonic communications methods in air, using a quadrature modulation method. Simulations were first performed to establish the likely performance of quadrature phase shift keying over the limited bandwidth available in an ultrasonic system. Quadrature phase shift keying modulation was then implemented within an experimental communication system, using capacitive ultrasonic sources and receivers. The results show that such a system is feasible in principle for communications over distances of several meters, using frequencies in the 200 to 400 kHz range.

摘要

已经采用正交调制方法对空气中的超声通信方法进行了研究。首先进行了仿真，以确定在超声系统可用的有限带宽内正交相移键控的可能性能。然后，在使用电容式超声源和接收器的实验通信系统中实现了正交相移键控调制。结果表明，该系统在原理上可用于在 200 至 400 kHz 范围内的频率下进行数米距离的通信。