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PHY physical layer, frame structure, parameters, data, energy, modulation, frame, format
1. What are the main functions of the PHY layer?
Activation and shutdown of radio transceiver
Energy detection (ED) in the current channel
Link quality…
1. What are the main functions of the PHY layer?
Activation and shutdown of radio transceiver
Energy detection (ED) in the current channel
Link quality…
The advantage of FTTR technology lies in its fast transmission speed and low latency.As a transmission medium, optical fiber has extremely high bandwidth and transmission speed, which can meet the needs of users for high-speed networks.Compared with…
MQTT (Message Queuing Telemetry Transport, Message Queuing Telemetry Transport) is a lightweight messaging protocol based on publish/subscribe method under the ISO standard, which is usually used for communication between devices and applications…
1. What is 485 isolation circuit? RS-485 is a commonly used data communication protocol, widely used in industrial control systems, building automation, security systems and other fields. In some applications, the RS-485 interface needs to be…
Shared massage chairs are not a rare thing anymore. We often see them when we go shopping. Do you know why it can start working immediately after scanning the QR code for payment? What principle is this based on? Let'sl take a look at the "story…
What is the RS232 protocol?
The RS232 interface is a data transfer protocol designed to control serial communications. It is used to organize the flow of data from a data terminal equipment (DTE), such as a terminal or transmitter, to a receiver or…
The RS232 interface is a data transfer protocol designed to control serial communications. It is used to organize the flow of data from a data terminal equipment (DTE), such as a terminal or transmitter, to a receiver or…
