Abstract
The arrival of the information age has made us rely on communication increasingly. However, in the current wireless communication, the signal is subjected to various interferences in the process of propagation due to the openness of the channel. In the conventional communication system, the bandwidth of the transmission signal is designed as a narrow band to achieve the purpose of suppressing interference, and the spread spectrum technology will spread the spectrum of the baseband signal to a wide frequency band for transmission to solve the problem in the wireless communication system. It is one of the best ways to solve multiple access, anti-interference and confidentiality in wireless communication systems.
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