Firstly, the basic principles and the key techniques of access system is introduced, which includes modulation, error control, multi-address access, and embedded-system techniques.
文章首先详细介绍了接入系统的基本原理和关键技术，包括调制技术、差错控制技术、多址接入技术、嵌入式系统技术。
Firstly, the basic principles and the key techniques of access system is introduced, which includes modulation, error control, multi-address access, and embedded-system techniques.
文章首先详细介绍了接入系统的基本原理和关键技术，包括调制技术、差错控制技术、多址接入技术、嵌入式系统技术。
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