Isbedbeddelka - a ... Pulse isbedbeddelka width

Marka aad aragto in nolol maalmeedka la fikradaha cusub, dad badan oo isku dayaya in ay ka heli jawaabaha su'aalaha ay. Ujeedada this waxaa lagama maarmaan ah in lagu qeexo wixii arrin. Mid ka mid ah iyaga ka mid ah waa wax sida isbedbeddelka sida. isaga ku saabsan, oo la sii hadli doonaa.

sharaxaad guud

Isbedbeddelka - waa hab ka mid ah la beddelo mid ka mid ah ama go'an oo dhan xuduudaha ka oscillations ee hirka sare iyadoo la raacayo sharciga ku saabsan macluumaadka soo noqnoqoshada hooseeyo ee fariinta. Tani waxa ay keentey in kala iibsiga ah spectrum of signal gacanta ee gobolka hirka sare ah, tan iyo markii ay meesha bannaan ee wax ku ool ah in warbaahinta ay u baahan tahay in dhammaan transceivers ku shaqeeya ee mawjadaha kala duwan oo aan midba midka kale kalagoynta. Iyada oo habkan, vibrations macluumaadka waxaa lagu dhejiyay on side, loo yaqaan ahmiyadda koowaad ah. signal gacanta ku wuxuu ka kooban yahay macluumaad kala qaado. oscillations High-noqnoqoshada qaadataa doorka side macluumaadka, oon keensataa xaaladda side. Xogta signal gacanta lagu kala qaado waxaa la dhigay. Waxaa jira noocyo kala duwan oo ah isbedbeddelka in ay ku xiran tahay nooca waveform isticmaalo: laydi, saddex xagal, ama qaar ka mid ah oo kale. Marka calaamadaha digital in ay ka hadlaan salaysayn khalkhalgelinta. Sayidka, isbedbeddelka - geeddi-socodka ah ee ku lug leh gariirka, sidaa darteed waxaa laga yaabaa in inta jeer, Ilodanimada, wajiga, iyo kuwa kale.

noocyada

Haddaba waad arki kartaa noocyada ifafaale jira. Dhab ahaantii, isbedbeddelka ka - geeddi-socodka ah, taas oo la ruxruxo ah ee hirka sare ah waxaa loo wareejiyey. Inta badan, noocyada soo socda: inta jeer, Ilodanimada inayan iyo wajiga. Marka isbedbeddelka inta jeer dhacdaa isbedelka ku dhacay inta jeer, iyadoo Ilodanimada - Ilodanimada inayan laakiin waji - wajiga. Waxaa jira aragtiyo isku dhafan. isbedbeddelka width iyo badalaada iska leh in la kala saaro noocyada. Xaaladdan oo kale, soo koobin ee gariirka ee hirka sare discretely beddelo.

isbedbeddelka Ilodanimada

In nidaamka la isbedelka noocan ah waa wax isbedel ah oo Ilodanimada inayan ruxruxo side at inta jeer sare taasi oo ka ruxruxo modulating ah. Marka Falanqaynta inta jeer ee wax soo saarka ayaa shaaca ka qaaday ma aha oo kaliya inta jeer ee la gelin ah, laakiin ay wadarta iyo farqiga. Xaaladdan oo kale, haddii isbedbeddelka ah - waa la ruxruxo adag, sida, tusaale ahaan, calaamadaha hadalka kooban hannaanka ah mawjadaha, ku qaadan lahaa laba kooxood, mid hoos ku side, iyo xubin ka labaad ee wadarta iyo farqiga u mawjadaha. Waxay lateral yeedhay, sare iyo hoose. First - replica ah asalka signal audio wareejiyay by noqnoqoshada gaar ah. band hoose - Nuqul ka mid ah signal asalka ah oo uu joogsadey inversion ah, in uu yahay, firikuwensiyada sare asalka ah - inta jeer a hoose ee dhinaca hoose.

dhinaca hoose waa image muraayad dhinaca qaraabo sare oo soo noqnoqoshada side ah. System isticmaalaya isbedbeddelka Ilodanimada, side gudbinta iyo labada dhinac oo ah, wuxuu u yeedhay laba-haadka. side kuma jiraan wax war faa'iido leh, sidaa daraadeed waxa laga saari karaa, laakiin ay dhacdo in kasta oo, band signal laba jeer waa asalka ah. Gaabiso guutadii waxaa lagu gaarayaa by barakiciyay ma aha oo kaliya taageero, laakiin sidoo kale mid ka mid ah dhinaca, sida isku waslad ka mid ah macluumaadka ku jira iyaga oo ku. noocyada Tan waxaa loo yaqaan isbedbeddelka-hal sideband la side u dhigan.

demodulation

Marxaladani waxay u baahan tahay isku qasin signalka meyxaanahaa la side ah inta jeer ee la mid ah in waxa la timaada by modulator ah. Intaas ka dib, signal asalka ah waa la helay qaab inta jeer ama inta jeer band gaar ah, ka dibna geddigood ka calaamadaha kale. Mararka qaarkood qarniga side for demodulation dhacaya on dhulka, halka waxa aanu had iyo jeer ku beeganto inta jeer side si modulator ah. Maaddaama ay farqiga yar ee u dhexeeya mawjadaha muuqan mismatches, taas oo ah caadiga ah ee wareeggeedii telefoonka.

isbedbeddelka garaaca wadnaha

Xaaladdan oo kale, signal a baseband digital, i.e. u ogolaanaya in ay encode ka badan hal qayb per Baud by habaynteeda signal xogta binary galay heerar kala duwan. The gelinno of signal ka binary waxaa mararka qaarkood u qaybsan labo-labo. Waayo, labo ka mid ah afar yara muuqashadii isku jira waxaa loo isticmaali karaa, kuna waari dhexdeeda Labada ciyaaryahan kasta oo ka wakiil yahay mid ka mid ah afar heer Ilodanimada inayan. signal noocan oo kale ah encoded lagu gartaa in in heerka isbedbeddelka waa qeybtii heerka Baud of signal xogta asalka ah, sidaas darteed waxaa loo isticmaali karaa isbedbeddelka Ilodanimada hab caadiga ah. Its codsigaaga la ogaaday in isgaarsiinta raadiyaha.

isbedbeddelka noqnoqoshada

Systems la isbedbeddelka ah u qaadan in inta jeer side sida kala duwan doonaa qaabka of signal modulating ah. Noocani waa nooc ka xoogbadan, marka la eego xasiloonida Ilodanimada inayan si loo ogaado saamaynta on shabakad telefoonka ee jira, sidaas darteed waa in la isticmaalaa xowliga yar, halkaas oo ay jiraan wax loo baahan yahay in ay ku lug bandwidth weyn.

Wajiga-Ilodanimada isbedbeddelka

In la kordhiyo tirada jajabka per Baud laga yaabaa in wajiga la isku daray iyo isbedbeddelka Ilodanimada inayan.

Sida mid ka mid ah hababka casriga ah ee isbedbeddelka Ilodanimada-waji ah la xusay waxaa laga yaabaa in mid ka mid ah taas oo ku salaysan gudbinta multicarrier. Tusaale ahaan, in codsiga qaar ka mid ah side 48 kala bixi oo ka mid ah 45 Hz. By isku Ilodanimada inayan iyo wajiga isbedbeddelka ee side kasta waxaa loo qoondeeyey 32-goboleedyada Discrete in muddo kasta Baud gaar ah, taas oo suurto gal ah si ay u fuliyaan 5 gelinno per Baud. Waxaa soo baxday in set oo dhan taas oo kuu ogolaanaya inaad si ay u gudbiyaan 240 gelinno per Baud. Marka howlgala 9600 heerka yara / s isbedbeddelka u baahan tahay 40 Baud. Tiradan waxaa ku yar waa wax dulqaad ah Ilodanimada inayan iyo wajiga ka bootin soo jireenka ah si ay network telefoonka.

Suntan isbedbeddelka Suu

Noocaan waxaa inta badan loo arkaa nidaamka ah baahinta calaamadaha analog, tus, dijital ah codkooda. farsamada isbedbeddelka Tani looma isticmaalo in Moodeemka. Halkan gating dhacdaa signal analog heerka laba jeer signal ugu sareeya qayb noqnoqoshada qaab analog. Marka la isticmaalayo nidaamka sida shabakadaha telefoonka gating dhacdaa 8000 jeer labaad. muunad kasta - waa heerka danab ku encoded toddoba code yara. Si fiican wakiil ka luqadda lagu hadlo, habaynteeda waxaa loo isticmaalaa logarithmically. Toddoba wada gelinno la siddeedaad hadlayay joogitaanka octet signal la aasaasay a.

isbedbeddelka iyo la ogaado ayaa loo baahan yahay si loo soo celiyo signal fariinta, in uu yahay habka dambe. Marka signal waxaa loo roggi by hab Fansaarada. xubno Fansaarada kobciyo qaybaha spectrum cusub ee spectrum of signal wax soo saarka iyo filtarrada waxaa loo isticmaalaa in ka jaraan qaybood noqnoqoshada hooseeyo. Isbedbeddelka iyo la ogaado waxa lagu samayn karaa iyadoo la isticmaalayo dioska- vacuum, transistors, diode Semiconductor sida element a Fansaarada. Dhaqan ahaan loo isticmaalo dioska- Semiconductor dhibic, tan iyo capacitance ka aqbasho planar waa aad u balaaran.

noocyada casriga ah

isbedbeddelka Digital bixisaa fog weyn awoodda macluumaad iyo jaanqaadi adeegyo kala duwan oo xog digital. Intaa waxaa dheer iyadoo la kaashanayo hagaagay ammaanka macluumaadka, fiicnaaday nidaamka isgaarsiinta tayada iyo dardar helaan iyaga.

Waxaa jira dhowr caqabadaha soo food by samaynta nidaamyo kasta, awood la ogolaan karo iyo inta jeer width band, a nidaamka isgaarsiinta heerka buuqa loo dejiyay. Maalin kasta tirada dadka isticmaalaya nidaamka isgaarsiinta, iyo sidoo kale baahida sii kordhaysa, waayo, taas oo u baahan in la kordhiyo khayraadka raadiyaha. isbedbeddelka Digital waa sicad uga duwan analog si side u gudbiya xaddi badan oo macluumaad.

kakanaanta isticmaalka

The horumarinta nidaamyada radio digital waa hawl weyn ee sida - si aad u hesho tanaasul u dhexeeya width ee band baahinta xogta iyo kakanaanta ee habka farsamo. Si taas loo gaaro, isticmaalka habboon farsamooyinka isbedbeddelka kala duwan si ay u helaan natiijada la rabay. isgaarsiinta Radio waxaa loo abaabuli karaa iyadoo la isticmaalayo gudbiye fudud iyo circuitry qaata, laakiin inta jeer ee spectrum saami ay tirada xubnaha loo isticmaalo isgaarsiinta sida. Wixii war laliska aad u adag waxana helaya baahan bandwidth ka yar wixii macluumaad baahin ee mug isku mid. Si aad u guurto farsamooyinka gudbinta spectrally hufan loo baahan yahay in ay adkayn qalabka sida. dhibaatada Tani ma waxay ku xiran yihiin nooca isgaarsiinta.

beddeli

isbedbeddelka width garaaca wadnaha waxaa lagu gartaa in signal side ay ka dhigan tahay isku xigxiga oo ka mid ah digir, kuna waari dhexdeeda inta jeer garaaca wadnaha waa joogto ah. isbedel ayaa walaac kaliya muddada garaaca wadnaha kasta oo signal modulating ah, siday u kala horreeyaan.

isbedbeddelka width garaaca wadnaha waa ka wajiga inta jeer ee kala duwan. Arintaan ku lug signal isbedbeddelka sida la ruxruxo Culumida Soomaaliyeed. Waxaa lagu gartaa Ilodanimada inayan a joogto ah iyo inta jeer variable ama wajiga. calaamadaha garaaca wadnaha ayaa sidoo kale la meyxaanahaa karaa inta jeer. Waxaa laga yaabaa in muddo ah garaaca wadnaha go'an, iyo inta jeer waa in qaar ka mid ah qiimaha celcelis ahaan, laakiin qiimaha degdeg ah kala duwanaan doontaa iyadoo ku xiran calaamadaha modulating.

natiijooyinka

Waxaa suurto gal ah in ay isticmaalaan noocyada isbedbeddelka fudud, iyadoo dhimaya mid keliya sida kala duwan doonaa macluumaadka modulating. nidaamka isbedbeddelka isku daro taas oo loo isticmaalayo in qalabka casriga ah ee isgaarsiinta, - marka uu jiro isbeddel isku mar iyo Ilodanimada inayan iyo wajiga side. In nidaamka casriga ah waxaa loo isticmaali karaa subcarriers badan, kuwaasoo mid walba uu isticmaalaa nooc ka mid ah qaar ka mid ah isbedbeddelka. Xaaladdan oo kale, waa qorsheyaasha signal isbedbeddelka. Eraygan waxa loo isticmaalaa noocyada multilevel adag oo u baahan muuqaalada dheeraad ah in ay macluumaad sharaxaad dhamaystiran.

In nidaamka isgaarsiinta casriga ah shaqaaleeyaan nooca ugu hufan ee isbedbeddelka, taas oo yaraysay bandwidth la siiyo boos inta jeer lacag la'aan ah noocyada kale ee calaamadaha. links tayo leh ka kaliya ee ku guuleystay, laakiin ay dhacdo in this kakanaanta qalabka waa mid aad u sarreeya. Ugu dambayntii, soo noqnoqoshada isbedbeddelka siinayaa natiijo kaliya la arki karo in user dhamaadka eego sahlo isticmaalka hab farsamo ah.