broadband

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broadband

[′brȯd‚band]
(communications)
A band with a wide range of frequencies.

broadband

(communications)
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.

broadband

(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 ?
The current low penetration rates offer immense growth opportunities in the Asia Pacific broadband access market until 2009.
8 percent by the end of 2012, and the southeast Asian, Chinese, and Indian broadband access services markets are expected to have the highest growth potential in the region.
We're pleased to have the opportunity to work with such a leading ISP and play a significant role in helping develop its broadband access added value services with ECI's advanced access solutions to support its competitive edge in this dynamic market.
In Chapter 5, business case considerations, such as broadband pricing models and obstacles and enablers of broadband access success are examined.
For broadband access, the UPA will focus its 2006 activities on progressing and supporting global standardization efforts based around the Open PLC European Research Alliance (OPERA) specification, which was demonstrated across American, Asian and European markets in 2005.
Ixia's Access Testing Solution, including IxAccess(TM), IxChariot(R), IxANVL(TM), and the Ixia hardware platform, provides a complete solution for testing broadband access concentrators, network servers, edge routers, and access systems of all types - enabling conformance, functional, and performance testing under realistic and high capacity loads.
Additionally, Pannaway announced the general availability of its award-winning Fiber Broadband Access Switch and Fiber Residential Gateway NID (RGN(TM)) for Fiber-to-the-Home (FTTH) deployments - the industry's first next-generation Optical Line Termination (OLT) system with 10 Gbps Ethernet uplink capabilities.
Rex Naden, CEO of Teknovus, said, "There is no question that fiber-based broadband access is growing rapidly into a huge market for Asia and the rest of the word.
STOCKHOLM, Sweden -- Ericsson (NASDAQ:ERICY) has signed a breakthrough broadband access contract with Colombian fixed operator Telebucaramanga.
SAN DIEGO & MUNICH, Germany -- Ovation MCU1000 Provides Broadband Access for Home, SOHO and Enterprise Markets
Critical Telecom's GEmini(TM) Remote Ethernet DSLAM to be distributed by leading telecom supplier as part of their Broadband Access Portfolio