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What is a LAN? LAN means Local Area Network. A LAN represents a broadcast domain, which means that all members of the LAN will receive broadcast packets sent by any member. Members of the LAN can talk to each other and can set up their own ways for computers from different users to talk to each o...

The data link layer of WLAN is used as the key layer for data transmission. To understand WLAN, you also need to know it in detail. Through the following explanations: In the protocol of IEEE 802.11, its MAC sublayer contains the media access mechanisms of DCF and PCF:  Meaning of DCF: Distribute...

PHY, the physical layer of IEEE 802.11, has the following history of technology development and technical standards:   IEEE 802 (1997) Modulation technology: infrared transmission of FHSS and DSSS Operating frequency band: operating in the 2.4GHz frequency band (2.42.4835GHz, 83.5MHZ in tota...

There are many nouns involved in WLAN. If you need to deeply understand the knowledge points of WLAN, you need to make a full professional explanation of each knowledge point so that you can understand this content more easily in the future.  Station (STA, for short).  1). The station (point), al...

WLAN can be defined in both a broad sense and a narrow sense: From a micro perspective, we define and analyze WLAN in both broad and narrow senses. In a broad sense, a WLAN is a network made by replacing some or all of the wired LAN’s transmission media with radio waves, such as infrared, l...

Constellation is a basic concept in digital modulation. When we send digital signals, we usually do not send 0 or 1 directly, but first form a group of 0 and 1 signals (bits) according to one or several. For example, every two bits form a group, that is, 00, 01, 10, and 11. There are four states ...