Abbreviation for Standard Generalized Mark-up Language. A file format for storage of text and graphics files.

Serving GPRS Support Node

In secure systems, a permutation of the bits in a byte or other data unit, which permutation is used to increase redundancy during the signature process. [After X9.31-1]

1. The attenuation caused to a radio signal by obstructions in the propagation path.
2. In a reflector antenna, the relative reduction in the effective aperture of the antenna caused by the masking effect of other antenna parts, such as a feed horn or a secondary reflector, which parts obstruct the radiation path.

The unit of information derived from the occurrence of one of two equiprobable, mutually exclusive, and exhaustive events.
Note: A bit may, with perfect formatting and source coding, contain 1 Sh of information. However, the information content of a bit is usually be less than 1 Sh.

A statement defining the theoretical maximum rate at which error-free digits can be transmitted over a bandwidth-limited channel in the presence of noise, usually expressed in the form C = W log2(1 + S/N), where C is the channel capacity in bits per second, W is the bandwidth in hertz, and S/N is the signal-to-noise ratio.
Note: Error-correction codes can… (Read More →)

A network inserted in a circuit for the purpose of improving or modifying the waveform of signals.

A service link connection that can be used by any service customer (SC) in a predefined set of SCs on a first-come, first-service-basis; that is, during a specific time period, only one SC can use the service link connection, and the right to use the service link connection is assigned on a first-come, first-served basis. [After T1.263-1998]

Software available for downloading from public networks and bulletin board systems, usually at little cost.
Note: At the end of a trial period, users are asked to pay the software developer a small amount for use of the software. [After Bahorsky]

The informal, subjective evaluation of detail in the clarity or resolution seen in an image.
Note: Often sharpness and resolution are assumed to be directly related, because images possessed of greater sharpness are assumed to have greater resolution. An increase in subjective sharpness is usually reported when objects are more clearly delineated from each other and from background having hard,… (Read More →)