Modulation by chirp signals, in particular for application in a multi-path environment

摘要

A method for transmitting and receiving information by means of waves, comprising: (a) an information signal is attached to a carrier wave, whose frequency is continuously changed to form a series of at least two carrier sweeps in a preset time interval, (b) the carrier wave is transmitted as a transmission signal without transmission of a reference signal, (c) the frequency characteristic of the carrier sweeps is varied with respect to at least one of the frequency position of the carrier sweeps, the rise of the carrier sweeps and the form of the change in the carrier frequency from carrier sweep to carrier sweep, and (d) the transmission signal is filtered after being received in the frequency range for separating multipath components or is cleaned of noise portions and is evaluated from itself with respect to information-carrying signal parameters. Also disclosed are sending and receiving devices adapted for transmitting and receiving information of the above method.