一种基于Chirp信号的多数据传输方法研究

A Multi-bit Data Transmission Method Based on Chirp Signals

以分数阶傅里叶变换为数字信号处理基础,使用单Chirp信号完成多比特的数据传输功能.发送端采用同调频率不同初始频率的Chirp信号作为调制信号,接收端对接收到的信号进行分阶数傅里叶变换,根据分数域能量聚集的不同位置进行解调.此方法可在不影响Chirp载波性能的前提下,完成多数据的传输,进一步提高了通信系统的性能和容量.

In this paper, a method for multi-bit data transmission was complemented in terms of sin- gle Chirp signals based on fractional Fourier transform. The sender uses Chirp signals with different initial frequencies of homological frequency as the modulating signals, and the receiver processes the received signals by fractional Fourier transform. Demodulation is performed according to the different positions of accumulated energy in the fractional domains. This method is able to complete the trans- mission of multi-data without interference to the Chirp carrier and improves the performance and ca- pacity of communication systems.