Speed describes the length of time it takes for data to be transferred. Thus, an important principle in the design of network protocols continues to be the conservation of bandwidth.Ĭopyright © 2005 The Linux Information Project. Bandwidth describes the volume of data that can be transferred at a given time. This is due to such factors as the continued increase in the numbers of users (especially of the Internet), the growth in the demand for applications which require more bandwidth and the high cost of upgrading some portions of networks (particularly replacing copper wire connections to individual homes and offices with optical fiber). Nevertheless, bandwidth is often insufficient. For example, the development of optical fiber cable made possible a huge increase in bandwidth as compared with copper wire cable, and the bandwidth of optical fiber cable continued to increase both as a result of improvements to the optical fiber itself and to the transmitters and other devices used with it. This has been a result of technological advances with regard to both the transmission media and the devices that are used with it, such as transmission circuits, reception circuits and routers. For example, the transmission of simple ASCII text messages requires relatively little bandwidth, whereas the transmission of high resolution video images requires a large amount of bandwidth.Ī major trend in networks at all levels (i.e., from LANs to the Internet) has been increasing bandwidth. This band refers to a band, or range, of. The term in question is obviously composed of band and width. Whenever possible, I like to start with a definition that is based on a term’s constituent words, or on the etymology when constituent words are not readily recognizable.
The required bandwidth can vary greatly according to the type of application. The Definition of Bandwidth: The Width of the Band. For analog devices, the bandwidth is expressed in cycles per second, or Hertz (Hz). This capacity might more appropriately be referred to as throughput.įor digital devices, the bandwidth is usually expressed in bits per second (bps), kilobits per second (kbps) or megabits per second (mbps).
The higher the frequency, the higher the bandwidth and thus the greater the capacity of a channel. The term technically refers to the range of frequencies that a channel can carry. The greater a channel's bandwidth, the more information it can carry per unit of time. The bandwidth determines the rate at which. Bandwidth definition by The Linux Information Project (LINFO) LINFOīandwidth refers to the data transmission capacity of a communications channel. Bandwidth can be defined as follows: The range of frequencies that can pass over a given transmission channel.
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