Knowledge

What is an Ethernet switch and how does it is work?

With the rapid development of computers and their interconnection technology (also known as “network technology”), Ethernet has become the short-range two-layer computer network with the highest penetration rate so far. The core component of Ethernet is the Ethernet switch. Manual and... Read More

What is VCSEL laser?

VCSEL, which is called a Vertical Cavity Surface Emitting Laser in full, is a kind of semiconductor laser. Currently, most VCSELs are based on GaAs semiconductors, and the emission wavelength is mainly in the infrared wave band. In 1977, Professor Ika Kenichi of Tokyo University of Technology fir... Read More

Network Classification of PAN, LAN, MAN and WAN

The network can be classified into LAN, LAN, MAN, and WAN. The specific meanings of these nouns are explained and compared below.  (1) Personal Area Network (PAN) Such networks can enable short-distance network communication between portable consumer appliances and communication devices, This cov... Read More

What is the Received Signal Strength Indication (RSSI) in detail

RSSI is the abbreviation of Received Signal Strength Indication. The received signal strength characterization is calculated by comparing two values; that is, it can be used to determine how strong or weak the signal strength is compared with another signal.   The calculation formula of RSSI... Read More

Basic Technical Principles of MIMO

Since 802.11n, MIMO technology has been used in this protocol and has significantly improved the wireless transmission rate. Specifically, how to achieve high technology improvement. Now let’s take a closer look at MIMO technology. With the progress of wireless communication technology, mor... Read More

Classification of Switches

There are many types of switches on the market, but there are also different functional differences, and the main features are different. It can be divided according to the broad sense and scale of application:  1) First of all, in a broad sense, network switches can be divided into two categorie... Read More