Overview of commonly used spread spectrum techniques

Abstract

Spread spectrum communication technology is characterised by strong anti-interference, strong concealment, multipath resistance and low power spectral density. In recent times, it has been widely used in aerospace measurement and control, military communication, hydroacoustic communication, optics and other fields for the purpose of realising high quality and high speed transmission of signals and completing the purpose of information transfer. In recent years, along with the development of 5G and other communication methods, spread spectrum technology has been introduced into the public's field of view, and it is the focus of future spread spectrum technology to consider how to achieve high speed rate and high applicable communication quality. Firstly, the working principle, composition and development direction of basic spread spectrum technology, hybrid spread spectrum technology and other spread spectrum methods are introduced, such as summarising the fuzzy problems of BOC signals and introducing the improvement of direct sequence spread spectrum technology after the introduction of chaotic sequences. The advantages and limitations of each of the different spread spectrum techniques are analysed for the advantages and disadvantages at the end.