Automatic repeat request (ARQ) schemes and transport control protocol (TCP) are often used as error-control techniques at the link layer and at the transport layer, respectively.
自动重传请求(ARQ)和传输控制协议(TCP)经常被分别用作链路层和传输层的错误控制机制。
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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