Broadband these days is very widely used in telecommunication these days. Its basic function consists of providing signals by handling wide range of frequencies. These frequencies can be than subdivided into frequency bins. It has a very simple working principle the larger is the bandwidth larger amount of information it can carry. Broadband is used in several different areas for example:

  1. Telecommunication
  2. Data communication
  3. DSL
  4. Ethernet
  5. In power line communication
  6. In video

In data communication broadband serves as source to handle numerous pieces of data to increase what is called the transmission rate. The basic function of broadband in DSL (digital subscriber line) is that it can transfer the digital information to a very high bandwidth channel. The common interface that is used for the broad band modems is the Ethernet which is used for DSL as well as cable net. Now a day’s power line communications are also being used.

So the basic function that the broad band performs in the power line communication is to achieve very high data rates. The basic difference between broadband and the dialup is that the dialup modems are limited to bit rates while broadband provides much greater speed without disturbing the telephone line. Now why broadband is called high speed internet because it has the ability to transfer data at a very high speed. Basically broadband is anything higher than 256kbit/s.

The common term that is used in broad band is data rates. Data rates are typically defined as maximum number of download. Broadband technologies which are common in most areas are DSL and cable modems. Many newer technologies are coming up like VDSL and optical fiber. In most of the areas where people face a difficulty to install DSL or cable modems they are using what is called as WIFI.

Broadband is very commonly used these days in mobile networks other than the computers. The technology that is used in mobile networks is called as WIMAX. There is no set definition regarding broadband with respect to bandwidth but mostly anything above 786kbit/s is considered as broadband. So broadband plays a very vital role in telecommunications and is spreading at a very high pace all over the world.