一种非线性chirp扩频的高效多址接入技术

An efficient multiple access technique using non-linear chirp signal

为提高基于chirp调制技术的无线通信系统的多址接入能力,提出一种基于非线性chirp扩频的高效多址接入技术.该技术利用chirp扩频的独特技术优势以及非线性chirp信号自身的特性来抑制MAI.仿真结果显示,这一新的多址接入技术可以容纳较多的用户同时接入,而不明显降低系统的误码率性能,与现有的利用chirp扩频的多址接入技术相比较,本文提出的新技术在同样条件下具有更好的BER性能.

This paper presents an efficient multiple access technique using non-linear chirp signal to enhance the multiple access capacity of a chirp modulation communication system.It makes use of the unique advantages of chirp spread spectrum and the characters of non-linear chirp signals to suppress the multiple access interference（MAI）.Simulation results show that this new technique can allow a larger number of users without an obvious degradation in performance which is important for multiple access.Compared with exiting techniques,the new one also has a lower BER under the same conditions.