broadband

broad·band

B0492900 (brôd′bănd′)adj.1. Of or relating to high-bandwidth data transmission.2. Of or relating to data transmission that uses multiple channels so that multiple pieces of data can be transmitted simultaneously.n. Any of several technologies that allow rapid transmission of data, as by using multiple channels simultaneously.

broadband

(ˈbrɔːdˌbænd) n (Telecommunications) a transmission technique using a wide range of frequencies that enables messages to be sent simultaneously, used in fast internet connections. See also baseband

broad•band

(ˈbrɔdˌbænd)

adj. 1. of, pertaining to, or responsive to a continuous, wide range of electromagnetic-wave frequencies. 2. pertaining to or being a type of high-speed data transmission in which the bandwidth is shared by more than one simultaneous signal. n. 3. broadband transmission. [1900–05]

Thesaurus

Adj.	1.	broadband - of or relating to or being a communications network in which the bandwidth can be divided and shared by multiple simultaneous signals (as for voice or data or video)
	2.	broadband - responding to or operating at a wide band of frequencies; "a broadband antenna"wideband

Translations

宽带

broadband

→ 宽带zhCN

broadband

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

broadband

(communications)A class of communication channel capable ofsupporting a wide range of frequencies, typically from audioup to video frequencies. A broadband channel can carrymultiple signals by dividing the total capacity into multiple,independent bandwidth channels, where each channel operatesonly on a specific range of frequencies.

The term has come to be used for any kind of Internetconnection 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, incontrast to a dial-up connection, and a fixed monthly rateis charged, often with a cap on the total amount of data thatcan be transferred. Domestic broadband connections typicallyshare a telephone line with normal voice calls and the twouses can occur simultaneously without interference.

See also baseband, narrowband.

broadband

(1) A type of transmission that uses frequency division multiplexing (see FDM).

(2) 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, 4G, 5G and satellite, all of which are faster than earlier analog dial-up by a huge magnitude.

A Formal Definition
Broadband 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. In 2015, the FCC redefined the minimum as 25 Mbps down and 3 Mbps up, updating the 2010 rating of 4 and 1 Mbps. However, based on the revised definition, more than 50 million rural Americans did not have access to broadband speeds that year.

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 wireless broadband, T1, cable modem and DSL.

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Synonyms for broadband

adj responding to or operating at a wide band of frequencies

Synonyms