Frequency-division multiple access — or FDMA is an channel access method that is used by radio systems to share a certain radio spectrum between multiple users. The users are individually allocated one or several frequency bands, allowing them to access the radio system without… … Wikipedia
frequency distribution — Statistics. the correspondence of a set of frequencies with the set of categories, intervals, or values into which a population is classified. [1890 95] * * * In statistics, a graph or data set organized to show the frequency of occurrence of… … Universalium
frequency encoding — in magnetic resonance imaging, the sorting of radio frequencies that are detected and assigning values to them so that the image can be interpreted … Medical dictionary
Orthogonal frequency-division multiplexing — Passband modulation v · d · e Analog modulation AM · … Wikipedia
Orthogonal frequency-division multiple access — Multiplex techniques Circuit mode (constant bandwidth) TDM · FDM · SDM Polarization multiplexing Spatial multiplexing (MIMO) … Wikipedia
Pentatonic scale — The first two phrases of the melody from Stephen Foster s Oh! Susanna are based on the major pentatonic scale[1] … Wikipedia
Art forgery — refers to creating and, in particular, selling works of art that are falsely attributed to be work of another, usually more famous, artist. Art forgery is extremely lucrative, but modern dating and analysis techniques have made the identification … Wikipedia
telecommunication — [tel΄ə kə myo͞o΄ni kā′shən] n. [also pl., with sing. or pl. v.] communication by electronic or electric means, as through radio, telephone, telegraph, television, or computers * * * tel·e·com·mu·ni·ca·tion (tĕlʹĭ kə myo͞o nĭ kāʹshən) n. 1. The… … Universalium
Underwater acoustics — The field of underwater acoustics is closely related to a number of other fields of acoustic study, including sonar, transduction, acoustic signal processing, acoustical oceanography, bioacoustics, and physical acoustics.HistoryUnderwater sound… … Wikipedia
Bell curve grading — In education, grading on a bell curve (or simply known as curving) is a method of assigning grades designed to yield a desired distribution of grades among the students in a class. Strictly speaking, grading on a bell curve refers to the… … Wikipedia
North American cable television frequencies — In North American cable TV networks, the radio frequencies used to carry signals to the customer are allocated to standardarized channel numbers listed in the CEA standard 542. Cable channel frequencies are generally different from off air… … Wikipedia