#Bandwidth definition computer plus
Useful throughput is less than or equal to the actual channel capacity plus implementation overhead. In general, for any effective digital communication, a framing protocol is needed overhead and effective throughput depends on implementation. Also, data packets may be lost, which further reduces the useful data throughput. Although in many modern implementations the protocol is efficient, it does add significant overhead compared to simpler protocols. For instance, a lot of internet traffic uses the transmission control protocol (TCP), which requires a three-way handshake for each transaction. For example, a channel with x bps may not necessarily transmit data at x rate, since protocols, encryption, and other factors can add appreciable overhead. A bit stream's bandwidth is proportional to the average consumed signal bandwidth in Hertz (the average spectral bandwidth of the analog signal representing the bit stream) during a studied time interval.Ĭhannel bandwidth may be confused with useful data throughput (or goodput). This sense applies to concepts and technologies such as bandwidth shaping, bandwidth management, bandwidth throttling, bandwidth cap, bandwidth allocation (for example bandwidth allocation protocol and dynamic bandwidth allocation), etc. The reason for this usage is that according to Hartley's law, the maximum data rate of a physical communication link is proportional to its bandwidth in hertz, which is sometimes called frequency bandwidth, spectral bandwidth, RF bandwidth, signal bandwidth or analog bandwidth Network bandwidth consumptionīandwidth in bit/s may also refer to consumed bandwidth, corresponding to achieved throughput or goodput, i.e., the average rate of successful data transfer through a communication path.
For example, bandwidth tests measure the maximum throughput of a computer network. peak bit rate, information rate, or physical layer useful bit rate), channel capacity, or the maximum throughput of a logical or physical communication path in a digital communication system. The term Bandwidth sometimes defines the net bit rate (aka. The connection to the computing term is that, according to Hartley's law, the digital data rate limit, or channel capacity, of a physical communication link is proportional to its bandwidth in hertz. This definition of bandwidth is in contrast to the field of signal processing, wireless communications, modem data transmission, digital communications, and electronics, in which bandwidth is used to refer to analog signal bandwidth measured in hertz, meaning the frequency range between lowest and highest attainable frequency while meeting a well-defined impairment level in signal power. Variously, bandwidth may be characterized as network bandwidth, data bandwidth, or digital bandwidth.
In computing, bandwidth is the bit-rate of available or consumed information capacity expressed typically in metric multiples of bits per second.