Wireless Wi-Fi Communication Technology Introduction

Wi-Fi technology is now widely used in homes and offices. The origin of Wi-Fi naming: Wi-Fi is an acronym for wirelesssFidelity. Nowadays, tunnel wireless monitoring Wi-Fi is often synonymous with wireless local area networks (WLAN). It is often mentioned simultaneously with WiMaX.

The history of Wi-Fi begins with an organization called the "Wireless Ethernet Compatibility Alliance." The mission of this organization is to certify the interoperability of wireless local area network (WLAN) devices produced by different vendors. Now the organization has changed its name to "Wi-Fi Alliance", which is based on the 802.11b standard of the American Institute of Electrical and Electronic Engineering (IEEE). After the Wi-Fi Alliance certification mark, the "Wi-Fi" logo is affixed to the product and a "Wi-Fi" certificate is issued.

The initial purpose of the WLAN is to introduce the concept of wireless in the traditional LAN, so that users in the LAN can get rid of the constraints of the cable and have certain mobility. WLAN uses high-frequency bands, and its transmission power is weaker than that of ordinary mobile phones. Therefore, it does not harm the human body and usually does not interfere with home or office appliances. Moreover, there are 12 channels left for adjustment.

WLAN not only enables people to enjoy the fun of wireless Internet access. Train wireless monitoring is a cleaner corporate office environment. It requires no complicated cabling in buildings. It only requires the deployment of access points (AP, Access Point) at any terminal location on the LAN. It is our commonly used wireless router. A computer with a Wi-Fi terminal can access the LAN.

The 802.11b standard also uses “dynamic rate drift” that can change with the environment. The rate can be switched between 11 Mbit/s, 5 Mbit/s, 2 Mbit/s, and 1 Mbit/s. In recent years, the development of Wi-Fi has been extremely rapid, and there have been many variants and upgrades, such as 802.11a and 802.11g. The rate can be as high as 54 Mbit/s, and the technology base is also changed from OFDM wireless monitoring to OFDM. What is expected is that the next-generation Wi-Fi standard 802.11n adopts multiple input and output (MIMO) technology, which has already mentioned its rate to 540 Mbit/s!

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