Wimax Introduction and OFDM

7/31/2019 Wimax Introduction and OFDM

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C{f}gu`ir Iuagc

U{ttjr} Kfhifkkr

Fkp}i~i}y BMc{f}gu`ir&kx{Dhcgia&ejc


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X`g} iu CGF :

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K}`krfk} Bgukm Ejffke}ijf if Cju} Grkgu

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I} iu utkeinikm if }`k IKKK 042&> u}gfmgrm& fk}xjrlu egf bk {t }j 24 ciaku

(54 lc) ajfh gfm jtkrg}k g} utkkmu jn 5= }j 7;; Cbi}*u&


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XiCGP (Xjramximk If}krjtkrgbiai}y njr Cierjxg~k Geekuu) iu g xirkakuuejcc{fieg}ijfu u}gfmgrm mkuihfkm }j trj~imk 54 }j =4 ckhgbi}#tkr#ukejfm mg}grg}ku! xi}` }`k 2477 {tmg}k trj~imifh {t }j 7 Hbi}*u njr nipkm u}g}ijfu& I} iu g tgr} jng nj{r}` hkfkrg}ijf! jr =H! jn xirkakuu#ejcc{fieg}ijf }ke`fjajhy&

XiCgp ngr u{rtguuku }`k 54#ck}rk xirkakuu rgfhk jn g ejf~kf}ijfga Xi#Ni! ajegagrkg fk}xjrl (AGF)! jnnkrifh g ck}rjtjai}gf grkg fk}xjrl xi}` g uihfga rgmi{u jngbj{} ;4 lc&

]`k fgck "XiCGP" xgu erkg}km by }`k XiCGP Njr{c! x`ie` xgu njrckm if

O{fk 2447 }j trjcj}k ejfnjrci}y gfm if}krjtkrgbiai}y jn }`k u}gfmgrm& ]`knjr{c mkueribku XiCGP gu "g u}gfmgrmu#bgukm }ke`fjajhy kfgbaifh }`k mkai~kryjn agu} ciak xirkakuu brjgmbgfm geekuu gu gf ga}krfg}i~k }j egbak gfm MUA"


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XiCGP rknkru }j if}krjtkrgbak ictakckf}g}ijfu jn }`k IKKK 042&7> ngciay jnxirkakuu#fk}xjrlu u}gfmgrmu rg}inikm by }`k XiCGP Njr{c&

XiCGP Njr{c ekr}inieg}ijf gaajxu ~kfmjru }j ukaa nipkm jr cjbiak trjm{e}u guXiCGP ekr}inikm! }`{u kfu{rifh g ak~ka jn if}krjtkrgbiai}y xi}` j}`kr ekr}inikm

trjm{e}u! gu ajfh gu }`ky ni} }`k ugck trjniak&

]`k jrihifga IKKK 042&7> u}gfmgrm (fjx egaakm "Nipkm XiCGP") xgu t{baiu`km if2447& XiCGP gmjt}km ujck jn i}u }ke`fjajhy nrjc XiBrj! g ukr~iek cgrlk}km ifLjrkg

XiCGP iu ujck}icku rknkrrkm }j gu "Xi#Ni jf u}krjimu gfm egf bk {ukm njr gf{cbkr jn gttaieg}ijfu ifea{mifh brjgmbgfm ejffke}ijfu! ekaa{agr bgel`g{a!`j}utj}u! k}e& I} iu uiciagr }j Xi#Ni b{} i} egf gauj tkrci} {ughk g} c{e` hrkg}krmiu}gfeku&


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XiBrj iu gf kgray agrhk#uegak mktajyckf} jn 042&7> if Uj{}` Ljrkg (Mke 244;)

Mkcjfu}rg}ku 042&7> tkrnjrcgfek gu ejctgrkm }j 5H*=H ekaa{agr ga}krfg}i~ku

5 jtkrg}jru `g~k bkkf aiekfukm by }`k hj~krfckf} (kge` utkfmifh v-7B)


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]`k bgfmxim}` gfm rgfhk jn XiCGP cglk i} u{i}gbak njr }`k njaajxifh tj}kf}igagttaieg}ijfu?

Trj~imifh tjr}gbak cjbiak brjgmbgfm ejffke}i~i}y gerjuu ei}iku gfm ej{f}riku}`rj{h` g ~grik}y jn mk~ieku&

Trj~imifh g xirkakuu ga}krfg}i~k }j egbak gfm mihi}ga u{bueribkr aifk (MUA) njr "agu}ciak" brjgmbgfm geekuu&

Trj~imifh mg}g! }kakejcc{fieg}ijfu (^jIT) gfm IT]^ ukr~ieku (}ritak tagy)&

Trj~imifh g uj{rek jn If}krfk} ejffke}i~i}y gu tgr} jn g b{uifkuu ejf}if{i}y tagf&


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XiCGP egf trj~imk g}#`jck jr cjbiak If}krfk} geekuu gerjuu x`jak ei}iku jrej{f}riku& If cgfy eguku }`iu `gu rku{a}km if ejctk}i}ijf if cgrlk}u x`ie` }ytiegaayjfay `gm geekuu }`rj{h` gf kpiu}ifh ife{cbkf} MUA (jr uiciagr) jtkrg}jr&

Gmmi}ijfgaay! hi~kf }`k rkag}i~kay ajx eju}u guujeig}km xi}` }`k mktajyckf} jn g

XiCGP fk}xjrl (if ejctgriujf xi}` 5H! @UMTG! pMUA! @NE jr N]]p)! i} iu fjxkejfjciegaay ~igbak }j trj~imk agu}#ciak brjgmbgfm If}krfk} geekuu if rkcj}kajeg}ijfu&


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Cjbiak XiCGP xgu g rktagekckf} egfmimg}k njr ekaa{agr t`jfk }ke`fjajhiku u{e`gu HUC gfm EMCG! jr egf bk {ukm gu gf j~kragy }j iferkguk egtgei}y& Nipkm XiCGPiu gauj ejfuimkrkm gu g xirkakuu bgel`g{a }ke`fjajhy njr 2H! 5H! gfm =H fk}xjrlu if

bj}` mk~kajtkm gfm mk~kajtifh fg}ijfu

Gfj}`kr grkg x`krk XiCGP ejffke}i~i}y iu njr XiNi `j} utj}u ejffke}i~i}y& Gu jnfjx! }`krk `g~k bkkf uk~krga XiNi `j}utj}u gfm g XiCGP bgel`g{a trj~imku n{aaxirkakuu uja{}ijf }j }`kuk xirkakuu fk}xjrlu&


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]`k cgif miu}ife}ijf bk}xkkf XiNi gfm XiCGP iu utkkm gfm ej~krghk miu}gfeku&XiNi `gu g }ytiega bgfmxim}` jn 2CBtu x`krkgu XiCGP egf `g~k g bgfmxim}` jn{t }j 8;CBtu& ]`k ej~krghk miu}gfeku gauj minnkr }j g hrkg} kp}kf}& G XiNI `j}utj}}ytiegaay ej~kru g nkx `{fmrkm nkk} rgmi{u (nrge}ijf jn g liajck}kr) x`krkgu gXiCGP egf trge}iegaay ej~kr {t }j g miu}gfek jn 74(> cgiau) trge}iegaay jr ;4

liajck}kru }`kjrk}iegaay &Jfk trjbgbak gttaieg}ijf jn CGF iu }j aifl uk~krga XiNifk}xjrlu }jhk}`kr xi}` XBG (Xirkakuu Brjgmbgfm Geekuu) {uifh XiCGP}ke`fjajhy&


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]ytiegaay! g XiCGP uyu}kc ejfuiu}u jn }xj tgr}u?

G XiCGP Bguk U}g}ijf? Bguk u}g}ijf ejfuiu}u jn ifmjjr kake}rjfieu gfm gXiCGP }jxkr& ]ytiegaay! g bguk u}g}ijf egf ej~kr {t }j 74 lc rgmi{u(]`kjrk}iegaay! g bguk u}g}ijf egf ej~kr {t }j ;4 liaj ck}kr rgmi{u jr 54 ciaku!

`jxk~kr trge}iega ejfuimkrg}ijfu aici} i} }j gbj{} 74 lc jr > ciaku)& Gfy xirkakuufjmk xi}`if }`k ej~krghk grkg xj{am bk gbak }j geekuu }`k If}krfk}&

GXiCGP rkeki~kr # ]`k rkeki~kr gfm gf}kffg ej{am bk g u}gfm#gajfk bjp jr gTECEIG egrm }`g} ui}u if yj{r agt}jt jr ejct{}kr& Geekuu }j XiCGP bguku}g}ijf iu uiciagr }j geekuuifh g Xirkakuu Geekuu Tjif} if g XiNi fk}xjrl! b{} }`kej~krghk iu cjrk&


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Uk~krga bguk u}g}ijfu egf bk ejffke}km xi}` jfk gfj}`kr by {uk jn `ih`#utkkmbgel`g{a cierjxg~k aiflu& ]`iu xj{am gaajx njr rjgcifh by g XiCGP u{bueribkrnrjc jfk bguk u}g}ijf }j gfj}`kr bguk u}g}ijf grkg! uiciagr }j rjgcifh kfgbakm by

Ekaa{agr t`jfk ejctgfiku&

Ictjr}gf} Xirkakuu CGF IKKK 042&7> (XiCGP) Utkeinieg}ijfu

Rgfhk # 54#ciak (;4#lc) rgmi{u nrjc bguk u}g}ijfUtkkm # [t }j 84 ckhgbi}u tkr ukejfm

Fjf#Aifk#jn#uih`} (FAjU) bk}xkkf {ukr gfm bguk u}g}ijfNrkw{kfey bgfmu # 2 }j 77 H@z gfm 74 }j >> H@z (aiekfukm gfm {faiekfukm bgfmu)Mknifku bj}` }`k CGE gfm T@Y agykru gfm gaajxu c{a}itak T@Y#agykrutkeinieg}ijfu&


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X`g} Iu XiCgp:


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Gu xi}` j}`kr }ke`fjajhiku IKKK mknifk jfay }`k mg}g aifl gfm T`yuiega agykr& Uj }jtrj~imk }`k Kfm {ukr ukr~iek ejcckreigaay xk fkkm gfm kfm }j kfm gre i}ke}{rk gfmj}`kr n{fe}ijf ailk biaaifh gfm g{}`kf}ieg}ijf& X`j xiaa Trj~imk }`kuk ukr~iek:


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If gmmi}ijf }j trjcj}ijfga ge}i~i}iku XiCgp Njr{c gauj trj~imk fk}xjrl gre`i}ke}{rk gfmGfm }ke`fiega utkeinieg}ijfu }j ejctak}k }`k fk}xjrl tie}{rk& I}u ge} ailk g ekr}inieg}ijf gfm

krinieg}ijf bjmy njr ~kfmjr kw{itckf}

]j u{ccgrizk 042&7> mknifk }`k rgmij if}krngek njr BXG gfm }`k XiCgp njr{c mknifk }`kKfm }j kfm fk}xjrl cgfghkckf}


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]`krk iu fj {finjrc hajbga aiekfukm utke}r{c njr XiCGP! `jxk~kr }`k XiCGPNjr{c `gu t{baiu`km }`rkk aiekfukm utke}r{c trjniaku? 2&5 H@z! 2&; H@z gfm 5&; H@z!

if gf knnjr} }j mri~k u}gfmgrmizg}ijf gfm mkerkguk eju}&

Gfgajh ]^ bgfmu (844 C@z) cgy bkejck g~giagbak njr XiCGP {ughk! b{} gxgi} }`kejctak}k rjaa j{} jn mihi}ga ] ! gfm }`krk xiaa bk j}`kr {uku u{hhku}km njr }`g}utke}r{c


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JNMCG }ytiegaay fkkmu g nrkw{kfey rk{uk jn 7 }j 5< }`iu ckgfu }`g} }`k g~giagbakutke}r{c c{u} bk utai} if}j g 5 ekaa njrcg}ijf&

]j j~krejck }`iu aici}g}ijf! JNMCG uyu}kcu egf cgif}gif g nrkw{kfey rk{uk jnfkgr 7 in }`krk grk ajeg}ijf ukfui}i~k }rgfuciuuijfu fkgr }`k kmhk jn }`k ekaa }`g} {uk

g u{buk} jn }`k egrrikru! gfm*jr in {uifh Gm~gfekm Gf}kffg Uyu}kcu (GGU)! ga}`j{h`GGU cgy bk }jj Kptkfui~k&


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74#>> H@z kry xkgl c{a}itg}` ejctjfkf}u (AJU iu rkw{irkm)Rgif g}}kf{g}ijf iu g cgojr iuu{kUifhak#egrrikr T@Y

2#77 H@z

C{a}itg}`FAJUUifhak gfm c{a}i#egrrikr T@Yu


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JNMC


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EMCG

]MCG

NMCG

Cjbiak xirkakuu fk}xjrl {uk uk~krga c{a}itak geekuu }ke`fiw{ku }j gaajx c{a}itak {ukr

]j uic{a}gfkj{uay geekuu }`k rgmij rkuj{reku&

Ak}u ajjlu }`kuk }ke`fjajhiku if g u`jr} ~ikx


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X`g} iu Utke}r{c Knnieikfey:

Gcj{f} jn ifnjrcg}ijf }rgfuci}}km if g hi~kf tkrijm jn }ick j~kr g hi~kf bgfmxim}`jn Utke}r{c

X`g} lifm jn }ke`fjajhiku {uk njr }`g}:

C{a}itakpifh! Cjm{ag}ijf! utg}iga rk{uk jn }`k nrkw{kfey


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24 Ckhgbi}*Uke

U{ttjr}km jf

74 C@z Utke}r{c

Rku{a} if

2 bi}*uke*@z


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JNMC bkkf }`krk nrjc 79>4

Tjt{agri}y ? @ih` mg}g rg}k xirkakuu }ke`fjajhy c{a}ickmig gttaieg}ijfu

Kfgbakr? ajx mihi}ga trjekuuifh eju}

Gm~gf}ghku? Knnieikf} {uk jn bgfmxim}` rkuiu}gfek }j c{a}itg}` if}krnkrkfek


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X`g} iu jr}`jhjfgaay :


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Wimax Introduction and OFDM