Abstract: This paper introduces several common spread spectrum technologies, and compares the direct sequence spread spectrum technology, Chirp spread spectrum technology and BOC spread spectrum technology under the condition that the chip time lengths after spread spectrum are same. It is designed to help readers have a deeper understanding of spread spectrum communication technology and provide reference for readers to choose a spread spectrum communication technology with better performance when spread spectrum communication technology needs to be used in a communication system.

Key words: spread spectrum communication, mobile communication technology, direct sequence spread spectrum technology, Chirp spread spectrum technology, BOC spread spectrum technology

摘要： 对几种常见的扩频技术进行介绍，在保证扩频后码片时间长度相同的情况下，对直接序列扩频技术、Chirp扩频技术以及BOC扩频技术进行比较。旨在帮助读者对扩频通信技术进行更深层次的了解，当通信系统中需要使用扩频通信技术时，为读者选择性能更优的扩频通信技术提供参考。

关键词: 扩频通信技术, 移动通信技术, 直接序列扩频技术, Chirp扩频技术, BOC扩频技术