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A band with a wide range of frequencies.


A class of communication channel capable of supporting a wide range of frequencies, typically from audio up to video frequencies. A broadband channel can carry multiple signals by dividing the total capacity into multiple, independent bandwidth channels, where each channel operates only on a specific range of frequencies.

The term has come to be used for any kind of Internet connection with a download speed of more than 56 kbps, usually some kind of Digital Subscriber Line, e.g. ADSL. A broadband connection is typically always connected, in contrast to a dial-up connection, and a fixed monthly rate is charged, often with a cap on the total amount of data that can be transferred. Domestic broadband connections typically share a telephone line with normal voice calls and the two uses can occur simultaneously without interference.

See also baseband, narrowband.


(1) High-speed transmission. Broadband commonly refers to Internet access via a variety of high-speed wired and wireless networks, including cable, DSL, FiOS, Wi-Fi, WiMAX, 3G, 4G and satellite, all of which are faster than earlier analog dial-up by a huge magnitude.

A Formal Definition
In 2015, the U.S. Federal Communications Commission (FCC) redefined the minimum broadband speed as 25 Mbps down and 3 Mbps up, updating the 2010 rating of 4 and 1 Mbps. The term always referred to a higher-speed connection, but the threshold varied with the times. Years ago, the widely deployed 1.5 Mbps T1 line was considered broadband speed. However, based on the 2015 definition, more than 50 million rural Americans did not have access to broadband speeds.

Public Vs. Private
The broadband term is sometimes used to contrast a public provider with a private network. For example, the phrase "broadband works for regular traffic in our branches, but we use private lines for our mission critical business." See broadband router, wireless broadband, T1, cable modem and DSL.

(2) Transmitting data by modulating a carrier wave in order to differentiate it from other signals in the air or in a wire. For example, frequency division multiplexing (see FDM) is used to carry hundreds of channels of digital TV in a single coaxial cable. In this context, broadband is used in contrast with "baseband," which refers to data that have not been modulated or multiplexed (see baseband and TDM). However, in most cases, the term "broadband" means high-speed transmission as in definition #1 above.

References in periodicals archive ?
For broadband providers, bundled on-demand video and high-speed Internet service is a promising business model.
Price for Life" benefits small businesses that want to pay the same price each month for high-speed Internet.
The company first offered High-Speed Internet service in the summer of 2001, and Hawaiian Telcom has upgraded the service to deliver excellent total value," said Mike McHale, Hawaiian Telcom's Chief Marketing Officer.
Our customers living in rural communities have endured the slower speeds of dial-up simply because they haven't had choices when it comes to high-speed Internet service providers," said Jim DeFranco, executive vice president at EchoStar.
We're thrilled to be the broadband video platform provider to Embarq High-Speed Internet subscribers and look forward to their continued success with this value added service.
Statewide high-speed Internet access is one of the keys to putting Michigan's economy back on track.
Since then, Clearwire has launched wireless high-speed Internet service in 27 metro markets, covering more than 200 cities and towns in Alaska, California, Florida, Hawaii, Idaho, Minnesota, Nevada, North Carolina, Oregon, Texas, Washington and Wisconsin in the United States, as well as Ireland, Belgium, Denmark (under the Clearwire name with Danske Telecom) and Mexico (via our partner MVSNet).
With the acquisition of ip-Colo, HS3 is now poised to enter the real-time security and monitoring business as well as provide high-speed internet access via satellite to businesses and industries currently unable to have cost efficient and reliable access to such services.
Since then, the company has expanded its Internet services to reach 22 markets and grown to more than almost 3 million high-speed Internet customers.
The download speed of Shaw High-Speed Internet will be increased to up to 5Mbps (currently up to 3Mbps) and Shaw High-Speed Xtreme Internet will be increased to up to 7Mbps (currently up to 5Mbps).
Like millions of Americans across the United States, many may think the chance of getting high-speed Internet connections in their neighborhood is probably slim or not likely at all.
Today's enhancements are yet another example of how Cox is continuously adding value to our high-speed Internet customers," said Steve Gorman, vice president product management and marketing for Cox High Speed Internet.

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