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DC Assignment 1

The document discusses various aspects of digital communication, focusing on quantization, modulation techniques, and noise reduction methods. It highlights the importance of quantization in converting analog signals to digital form and the advantages of different modulation techniques, such as Pulse Code Modulation (PCM) and Delta Modulation (DM). Additionally, it addresses challenges like noise and slope overload in signal processing and offers solutions for improving signal quality.
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0% found this document useful (0 votes)
10 views17 pages

DC Assignment 1

The document discusses various aspects of digital communication, focusing on quantization, modulation techniques, and noise reduction methods. It highlights the importance of quantization in converting analog signals to digital form and the advantages of different modulation techniques, such as Pulse Code Modulation (PCM) and Delta Modulation (DM). Additionally, it addresses challenges like noise and slope overload in signal processing and offers solutions for improving signal quality.
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF or read online on Scribd
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Signals bob ertrameyt| Si*multameous ly ove a Sinsle comm .chammel . uy Siruple demodulation: — sPnece POM Sigrols ane Ane, fis demodulabiort 1 cbragyt fern) Prvolwing Simple processee dé Re. decoding t econ sry Ge {OPE tien pf the 218 gaa L5G oll NY Why (5 Comipomollng used | > SMe prvcervs of Comapres Si g andaexpom divg | 'S Called Componecing, PF Now wacfocum quant! zens oivce, Lif ficult lomatre | ame! Expensive . e PT A DS0any, Albeenetive sky Pst pans tre Spce Heir | “OU 6 he momline auity before quantitaing witlne, | UMi forms Monti rex > PM 2 nombine aud hy cores es He Signet ampl’tude to belomprens edd Lee ile to the awake ere will have. X™Or era form plistetbaub' | 64 PALE Recer ee sy Cone in m4 Fsexpom cle d by omnn Pnvewse bo URemontine aur by. 5) What (3 Gry amulou Noike? How conn We. Neer Gromulate Norse) 7 PDD Crromel a fs bo olag 2 co Mput ston al. . é at THA 6 Fete Very Smale Veurtobiorrs fr te He fa 3 2 y ies Sigmat. the Steiscase Signal chomgeol ky long | mourt(S) because of laseg eslepSize. | (7 Me ernie belbween the mputomd approximated | | STomead | j ; “ «Norse o¢curcs Whentre Slep SKE calle cl.g> amularg ro (se, |» Ne $0/utiovr tothisproble-m 1s tom ake stepsize | { < o oo | small. Thue larcg e Step Size 16 vaqsrtrecl bo accomo dak ei dle alynamesoamge of the '/P5fqrotand Smell Steps Ane Tearive. ob bo Re clue. granular, Worse. ; > Adaplhve dellermodulation re the mod ehicod, £0 overccom e these wurnes. ae | | | | { { by N . ” Neorg a Techniques hnuy tye Pr clegttal Communteatiorr Syste Luffmorr Cocling:— 5 a Nouuable lengt emcoclir 4 Technique thal? assigns shoutere C move Freavent Symbol & amd. longerctodes fregumt Symbo Ss: By Awitle mele Coding! — 73 wmove tophistieateck: AER 2 Birgle Techntay a thotencod es 077e so O5 aa Aoattty potent monies frig intoerl Fo ayDelbeu encoding — Trentel@ rue differen bola ce vay 4 ay sharmen-Fane cocdin fates See tae F ies we. eff oem & VautablelengtacncoWa penigeg Gere eee ae twfa ct of Eepabprobabi lita Hae! one bit, o 3L ry foevrmedion. uded bo oltolingutsle titre '® sek | mmostefficiently. i. : AD What 9s tte Condition. fow avoiding the slope. oveuload.eucete 0 Howes He reduce. He Slope ovextls col eae) : i 4 Aud The Slope ovenlon ob uote quuts-ebbe Cours & of P o | tre lang e lyn amie rege of te input SiqnoL - \ : ae ; : [> The Rate of Rise of toput Signal ocle) 8 eae | that staircase Sigmeal corm Le pproniaeke ty | ste Sica $ beome to 0sm | Signet. to Follow he SteepSegrent ae > Thus therce “s lange sue pebweerelrestarrcue ApprKx Rrakecl San alt tueor’gimed Ue Siena - te omer *s calle ol. Slop eo vere loo te Listovtion: > ToRe duce this emo. , Me dbo bifre should be : Pe ere betwee Successivesy er | haw Elie Sbabv Cas — increased. Wiurslope of! |PSignal 7 high-, a | eee —— at i the lAfference between He OM amd ADM) « | i r 2 ee | __ Delta Modulation | Acaplive celt a. Modulation ADM acyusts Ae step Sze(delbad of blrequenti, zatiorr based or the 0% chauacm a) aes Modulab'er fs a Simple oe of omalog bo digit ad ne versio where the dle blve the Cuvunt’ Seunple or the prevrous Sam ta ’s quantized ond trams Ube. Paput Signe bentslies: "i > ° Tr, DM, tee Step Siz aremaine| 7 NOM tontinvsla ' be SES | constant thao yale wi NAL jo djtuate Uen5e (ea Oclulatiore proces §* lpaseat on the pp ovarees \ampplilode. amcor Os *3 5: | chomge- | DM *s pei liee be tes Oo eae ce autre | Pom plemen abiovycompanccl bo | a delitional ctr sy { ADM since ft Loew myoly™| ote algoritums ro | dynamicadyustment at dyn neath oes poucometers: | ig skepsree mad Pb shahtly ovelompler i eek pnent- | Heunorse 25pm fn Scene poe hebben . los mite apd ae amg 4 a | Lotmp' pM merysurffec tor vee ADM genenaUla ; 1 /psignale- | ee s eu DM: ay State the Advewtag e+ offib™ ov I ols belt uc thow the aL tov became & of fray y Me S fignak L cistoabiow am delto mo diwany oe taal fon slope over lone i granulare r0'se" ay Because of the Vantable step Size, the dynamic vienige vf ADM is Wi'de- ——t | BY ULI cabiow of bamoluitd He ts belte than moclul ation: rere ede delbo: out OMS. ‘Oy State the types of Nen-Unifeum guenti hss Ny what. 76 te dléfference betweerr the Wl aw on dh Alaw Compre $5 0% chauactuurstres - > : (-A=law Compomndin a la Compameing Da unifournt euanrtiratiow Ui fom auowtiz ckiow | fs achieve ol ak A= 1,wheuw fe achieved abr=O, re chaune turtst? 1 owe I hecws Els choreac totale bears etuststies UY | eiive is lene aseamd 7° . —— amd. wo Com pre tom esol Ow 1S dome. Ssioussclene- . a | Ee | ' : : [> Alou has wtdpitse ak 5 rufa hasmidbre ach | the out gin Hence iE Comtabte at tie out gist: Heres { amm-berovalve- Coytatrs a CoD ec. | : _. > Alor com eum ding °S 2 ALlaw com g's Lb @ ol, Fo’ rem telephone used Fou Speech nol : Systems.” ’ R\rruste Sfgrals + Br eee ae . 2 ae] with ding compo” Ae EY v | ° o2 O04 O68 og! IR} What % Me wWole of o system . 1 Me DPCM weeks onthe prreple of-prelictiou. € Of x predictor rr prem DMe valve of Xe present Somple, "sprecltcted. Rom | the $ post aunpl es Mepre clicr, magnrot be exact but %} Pes (E"s very close to the aclual Sampe OMe predicke d valve 1” ?. | precicked valve 1s roduce d.byusin Gg 0 | pre dfratae ox predivebion. Fikes : ome | | | | Me worstic x oulpat $ fom ol omdprevious Pree | ¢ bien fs adde dland giver as tiple te preci Tiere « tiew | ' > Mes makustte pre kichisumove and. move ¢ lose bp tlie ackuadsawpled Skanal the > Me. Companaken finds ouk tee aiff betweer® ole aclual somple vole ¢ pre icte bh Somp!& Nebs Pacatlecl ouor- | fo Long PraweeType Prestige A ' - 4 © ekelp of Neck cLingrams empl oe . i A tromemiittzy amd vecetvers of pulse code Moculatio | n> i Y False code modulatier, Tonsmittes 1) Somep Ling !— The Prialog Signal *s Sampled. aL ww Each sannpl its the Reculaw mtenvals:- Each: ample rep ree” any osiplnide of the Sigel at that pation) arom Donstine ol ito discréte levels Thisproe*S, : tuvolves ap ximating the Coritinous Litude. valves tuto atinite numberc of hiserete jevelS- | 8) Bx coding: — Rrally thequantice ol Samp] 06 6 | | | | 2) Quart Pxation! —Me Sony led valuesane thew | 7 fa bi- ese | encoded ¢ tp brrany code. Mis bi repr | Hows tyapte ally uses on fice cLenumbece af bits pee S le. | Fulse cod e Modulaber Recetver ~~ oS ee Fine (p —-— |comooned, Rega vexgie Decode Recenstruch Ineite. output cfreut Filter eben ) Decoding:— The Receivers Moet decodes tre bit codeback nto the quantized Samples : a7 Recenetsuctionr! ad Thisecportize cd Samples cu, ther reconatsuctecl imbo a. continous amalog Sioned. Mes Prvolves COnverctivng the cliscreteL levels back inlo Continous valte, qe seomplitudes > Values: = Fliteutng! —some times, filtering maybe applied to Bavoteouts isbow hints rtoodece of Mecsck Cee. Somaplineg ond eponttiz atiore proce sees. Rbiin. at Peunfoun, Gorittidatien! ' leve ie a eas ory fn wh Pele tle guevitiention Uy? uaubewnl y Sdaceol. ?. ol as a locum, Quart’ eotisy uae ia Pe M42 tuo types of untfoum await zation . 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Ray, Qv ~ 2 bet nowmalree ot, SignaLpowerbe dencted os P ee =_3P_,43v = “ unl Bo 247 23 This f6 tre Reautrecl Telatior, fox maximum Signal to qoutinatiow nose scotio Mus , Masi 5 (qnat to wontizetiory noise dahon vv Siz BP 9 pe ; 4 i Relations Fo Signalling rake. and_ 4 pega os ne ee oe My PCAF suctorns . tromsrm "5 ow S . te onttizere Use V num! te of br LG ctslovcrmsmteach lorie ae thew ” bere, Oflevele thet can be represente L by voligrts Wilbe, oy =2% zy : S presen te totadnurnb we of Ligit al levels level wort ren . : ‘diffe s thts, lhar Me lotadno.of levelswillbe, vy = 2% e levels > Foch soy, fe eno-of C P — ‘ fs per Sample =U. Dw . : © Rew that 10 -Of Somples pucsetone. =s Hy. ‘OF bits pen seconcl 6 given, td | ne Ff bilspes second = -n9.0f bits pew xno. of Sormpl es Sovmple Pexdecomd. =v bits pee x bs sormples pee The : Sovmple Setend- aos, bits per secon ob "Sols Si9nald e Of POM amd te denoted. 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Lisreducanrys” i 2 woken cee ole ere Hamornilte clone | [- UWashep fs trerease al, ir! o namitbeds TL foreFocks i ig tramgmilted-, uenot 6 | nt Gy | vde, "4 { ) the dello, a Ly ore dle pred “6 Mac rense | eden ge : ‘ get Ve. tore Appoximat e bd'g riot Soomple omly ome bin auy | alah Slop ove! diistocilion | Advambetgest ike 1 Delta Moolula Soamap le. Mars charmel bandwidlte 's qrurke srt | ay The Toomilltece f Recetvete Pmplementetion ite Vent | muchsiimpl ¢ for delta modulation TMhace fs v0 ‘ amalog to lly i tad conv ol ia delta rodutation. Disadvenitages a7 “—“™ y Slop «overload clfstor fiom, ay (aromatase Norse: : 4 Adapltve Delbo Mo culalion op Ie Painctple $ —To over Comme tlie quowt's ation, overlon ol. emol gr amulete NOME po : * eetcon to Ors Povo ee re Pp vauctations im thee! in ort Stqnol 5 bow ts anremibs only ome. bi tie sig Bly tora benecv ects oven? cinvolves Reds the impart i Vor” | Ceol. 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Enact! process 16 Followe oh 06 the rt 7 nactly the Somme t ancl presen th ta oe pn there The rev ious ven toon a. ecides, the slep SRG TE" afte nt no le temootien up sla = LP E btiengmoo thensouk Me, e Wewel bow econstruct thesmoolle Sign i { | impo thew case Staircase vo ithele, Ra vantin NY Ue Gitar mele lo nots ese pte . Aran, bac nite 60. @. Uber ord Iualation be cae mary delle, mad f 2 oem st see cloction (ot slope. 0 verdom ok lester “4. moiee | 2B AG whe | ty Became of theVaudahle cep free, Ut a dyriar eam ge of AOM fe wide, : {hows DM. | ayUlTP ection of BW fa hellere > Feplacia. 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