Wikipedia:Federal Standard 1037C terms/telecommunications transmission terms

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This is a list of telecommunications transmission terms derived from the Glossary of Telecommunication Terms published as Federal Standard 1037C. Please see the Federal Standard article for copyright-related issues, as not all parts of the source document are in the public domain.

Noise[edit]

ambient noise levelantenna noise temperatureatmospheric noisebackground noiseblue noisecarrier noise levelcarrier-to-noise ratio (CNR) — carrier-to-receiver noise density (C/kT) — channel noise levelcircuit noise levelclosed-loop noise bandwidthC-message weightingcosmic noiseeffective input noise temperatureequipment intermodulation noiseequivalent noise resistanceequivalent noise temperatureequivalent pulse code modulation noise (PCM) — equivalent satellite link noise temperaturefeeder echo noiseflat weightingFM improvement factorFM improvement thresholdfront-end noise temperatureHA1-receiver weightingidle-channel noiseimpulse noisein-band noise power ratiointermodulation noiseintrinsic noiseloop noisemodal noisemode partition noisenoisenotched noise144-line weighting144-receiver weightingphase noisephoton noiseprocess gainprorationpseudorandom noisepsophometric weightingquantizing noisequantum noisequantum-noise-limited operationrandom noisereceived noise powerreference noiseshot noisesignal-plus-noise-to-noise ratio ((S+N)/N) — signal-to-noise ratio (SNR) — signal-to-noise ratio per bitSINADsnowstereophonic crosstalkthermal noisetotal channel noisewhite noiseworst hour of the year

Transmission and propagation[edit]

absolute delayanalog transmissionanisochronousanomalous propagation (AP) — asynchronous transmissionatmospheric ductbabblebackscatteringbatched transmissionbit-stream transmissionburst transmissionchannelcoupled modescritical frequencycritical wavelengthcross-polarized operationDellinger effectdigital transmission groupdigital transmission systemdigital voice transmissiondiurnal phase shiftdouble-sideband transmission (DSB) — double-sideband reduced carrier transmission (DSB-RC) — double-sideband suppressed-carrier transmission (DSB-SC) — D regionductingduplex operationechoelectronic line of sightelevated duct region erlangflutterforward scatterFrequency of optimum transmission (FOT) — F regionFresnel zoneground wavegroup velocityhomogeneous claddingintermediate-field regionionosphereionospheric absorptionionospheric disturbanceionospheric forward scatterionospheric reflectionionospheric scatterionospheric turbulenceisochronous burst transmissionk-factorknife-edge effectline-of-sight propagation (LOS) — magnetic stormmagneto-ionic double refractionmaterial scatteringmaximum usable frequency (MUF) — Mie scatteringmultipathnear-field regionnear-vertical-incidence skywaveparallel transmissionpath clearancepath profileprimary service areapropagationpropagation constantpropagation modepropagation path obstructionpropagation time delaypulse broadeningquasi-analog transmissionradiation scatteringrayRayleigh fadingRayleigh scatteringreflecting layerreflectionrefracted rayrefractionrefractive index (n, ) — relative transmission levelright-hand (clockwise) polarized wavering latencyscatteringscintillationserial transmissionshadow losssimplex operationskip distanceskip zonesky wavesmooth Earthspace diversitysporadic Esunspotsurface wavesynchronous transmissiontime blocktrapped electromagnetic wavetropospheretropospheric scattertropospheric waveundisturbed dayvirtual heightwaveguide

Transmission lines[edit]

artificial transmission linebalanced linebuilding outbundlecableCategory 3Category 4Category 5coaxial cable (coax) — composite cabledirect-buried cabledirectional couplerelectrical lengthfiber optic cablefield wirefilled cablegroup delayhybrid cableland linelay lengthlinelong line (telecommunications)loopmediumnonloaded twisted pairon-premises wiringopen wirepaired cableplenum cablequadquadded cablereflectionreflection coefficient (RC) — return lossribbon cablesheathsheath milesshielded pairshielded twisted pairskin effectslopeslope equalizerspiral-four cablestrength membersymmetrical pairterminal impedanceterminationtransmission linetransverse electric and magnetic mode (TEM) — transverse electric mode (TE) — twin cableunbalanced lineunderground cableuniform transmission linevoltage standing wave ratio (VSWR) — waveguidezip-cord