Ama-CDMA amafoni - kuyini? Amanethiwekhi eselula namarekhodi we-standard CDMA

Uma sichaza ngokugcwele isifinyezo esigcwele salezi zinhlamvu ezine (i-CDMA), sizobe sithola amagama alandelayo - I-Code Division Ukufinyelela Multiple. Ngisho nalapho sichaza le nzuzo, siyihumusha ngolimi esiyiqondayo, asikwazi ukuqonda okuningi kulokhu. Siyaqaphela ukuthi uma sihumusha le nkulumo kusuka ngesiNgisi, sizokuthola ukuthi lokhu kuyisistimu yenani elikhulu lokuhlukanisa ikhodi. Yilokhu okushiwo amafoni e-CDMA. Ziyaziwa kakhulu namuhla. Futhi lokhu akumangalisi. Ngokuningiliziwe, yikuphi lokhu, amafoni we-CDMA, sizoxoxa ngokuqhubekayo esihlokweni sethu.

Iyini ifoni yohlobo lwe-CDMA?

Ukuze uqonde konke okusemqoka kwalolu buchwepheshe, okuyinto engacacile ngokuphelele, singakwazi ukudweba ukufanisa okuthile. Kungenxa yakhe ukuthi siqonda ngokujwayelekile lokho okushiwo into. Konke kuzoba okulula kakhulu futhi kungabonakali, uma udweba isifaniso nale foni ejwayelekile. Njengoba sonke sazi, kunezixhumi eziningana zokuxhumeka kwefoni, okujwayelekile kuzo yi-GSM ne-NMT.

Ukuxhumana kwe-NMT

Ngakho-ke, ake sihlaziye ukuthi yikuphi, amafoni we-CDMA. Emazweni amaningi kungenxa ngosizo lwe-NMT-uxhumano lomakhalekhukhwini ukuthi opharetha abaningi baqale umsebenzi wabo. Bese basebenzisa okuthiwa ukuhlukaniswa kwangasese kweziteshi ezithile. Ngokusekelwe kulokhu, singaqonda ukuthi ababhalisile ngokuqondile banikwe isici esincane kakhulu sama frequency. Kungenxa yalokhu ukuthi angaqhuba ukukhulumisana kwakhe. Yasanda kunikwa ingasetshenziswa. Futhi ngesiphi isizathu. Cabanga ukuthi kumitha eyodwa yesigcawu kukhona abantu abangu-3, futhi ngamunye wabo ukhuluma ngefoni. Akukho nhlobo induduzo. Futhi manje baye bathuthela endaweni eyanele ukuze bangayizwa.

Lokhu kuchaza ukuhlukaniswa kwemvamisa yeziteshi. Yilokhu okusetshenziswa amafoni e-CDMA. Kungenxa yalokho kuqhathaniswa ukuthi ngokujwayelekile imininingwane ethile icacile.

Idijithali ye-Digital ngesimo se-GSM

Le standard yokuxhumana digital esiyisebenzisa ekuphileni kwansuku zonke. Emazweni ahlukene, kusenomsebenzi oqondile. Lolu hlelo lubuye lusebenzise ibanga elihlukile lemvamisa ngendlela ehlukile. Ukuxhumana kwalolu hlobo akuhlukanisi ibanga elithile zibe izingxenye ezithile zomsebenzisi wonke. Kodwa lolu hlelo lwenza lokhu ngesikhathi esithile. Lokhu kuhlukaniswa kwesikhashana kweziteshi esizidingayo. Lokhu kusho ukuthi abantu abathile bathi ngesikhathi esithile, okudingekayo kubo, kanti omunye umbhangqwana ukhuluma ngesikhathi esifanele, futhi ngesikhathi esifanayo, ngaphandle kokudala ukungaboni kahle kwabanye abantu. Ngokuqondene nesistimu enjalo, amakholi we-CDMA nawo enza umsebenzi wawo oqondile. Kodwa sizoxoxa ngalokhu ngokuningiliziwe esigabeni esilandelayo.

Amazinga wokuxhumana we-CDMA

Ngakho-ke, sasifinyelela esimisweni esikudingayo. Futhi, isebenzisa uhla oluthile njengoluhlobo olwedlule lokuxhumeka, kodwa luhlukile ngendlela ehlukile. Isibonelo, ngenxa yokuhlukaniswa kwekhodi ethile. Iyini ukuhlukaniswa kwekhodi kule nkinga kunzima ukucabanga, ngakho ake sibuyele ekufanisweni. Uma abantu bekhuluma futhi bephazamisa umngane - kubi, kepha uma bonke abantu bekhuluma ulimi lwabo, okungukuthi, abanye - ngesiRashiya, abanye - ngesiNgisi, njalo njalo. Yilokho kanye ubuhlobo nokuxhumana kwekhodi. Manje thina ngokujwayelekile siyazi ukuthi kuyini, ama-CDMA amafoni. Kodwa nokho, lolu lwazi alitholakali kithi ngemininingwane eminingi njengoba singathanda.

Umlando wokuxhumana okuhle kakhulu kuze kube yimanje

Izinsizakalo zezinkampani ezihlukahlukene ezinzulu kakhulu, ngemuva kwalokho, kanye ne-CDMA futhi i-Intertelecom, yaqala ukuhlinzekwa ngo-2000. Wonke umuntu uyaqonda ukuthi ke izindleko zamafoni zazihle, futhi ukuthola ukuphela kwakungelula. Kodwa noma kunjalo ukukhulumisana okunikeziwe kunesidingo, nakuba sincane. U-opharetha ngamunye ngaleso sikhathi wayenezinhlelo zakhe zezinsizakalo, okwakhanga amakhasimende. Lo opharetha athuthukile kancane kancane, futhi kuyo yonke le minyaka izindleko zokuxhumeka kwazo ziye zinciphisa kakhulu, futhi izinga lezinsizakalo alizange likhule. Lokhu kudonsela amakhasimende amaningi njalo ngonyaka. Kuze kube yimanje, sinamanani amancane, enenzuzo eningi.

Okunye okumele uqaphele ukuhambisana kwalolu hlobo lokuxhumana, ngoba ungakhetha ngokwakho izinga elikufanele kakhulu.

Izinzuzo zokuxhumana zalolu hlobo

Ama-CDMA-amafoni asetshenzisiwe kakhulu futhi athandwa kakhulu. Kulokhu singaqonda ukuthi kunezinzuzo eziningi ngempela kuleli fomu. Ifoni ye-CDMA ehleliwe ifaka izinsiza eziningi ezahlukene ngosizo lwalo xhumano, sizokucabangela ngokuningiliziwe.

1. Okokuqala, kubalulekile ukuqaphela izinga lokuxhumana. Kule ndaba ukuthi le mfanelo imelela imingcele ephezulu kunoma yiziphi izinhlobo zokuxhumana. Ngokuxhumana okunjalo, uzozwa umuntu onemfanelo enjalo, njengokungathi uyimi phambi kwakho. Futhi lokhu kuzofakazela ukuthi ngisho nezinombolo ezingaziwa ungahlukanisa kuphela ngezindleko zezwi lomuntu ngaphesheya koxhumano lwefoni.
2. Lokhu kuxhumano kuvikelwe ngokuphelele emazingeni ahlukene we-wiretapping, okungenakujabulisa kodwa umthengi. Ama-CDMA-amafoni anempahla yawo njengalezi zinto, okulula kakhulu ukulilalela. Ukuze uqinisekise ukulalela ucingo oluthile, udinga ukuba nemishini efaneleka ngamashumi ezinkulungwane zamadola ase-US.
3. Isiteshi salolu opharetha singakunika ukuxhumana kunani elikhudlwana lababhalisile kunabanye opharetha afana nalo.
4. Ngokuqondene nemilayezo ekhishwe amafoni omakhalekhukhwini we-CDMA, lesi sici salolu hlobo lokuxhumana simelela idatha encane ye-ray. Futhi ngeke ukwazi kodwa ujabule.

Ukwaziswa ukuthi la mafoni we-CDMA avuliwe ngokugcwele. Manje unolwazi oluphelele mayelana nale divayisi kanye nezici zayo ngokushesha. Ngakho-ke, i-CDMA-ifoni ikuvumela ukuba ukhethe u-opharetha ofanele, kanye nezintela ezithandwayo zamakholi, kanye nokufinyelela kwi-inthanethi. ожно смело и, не задумываясь, переходить к операторам данного вида связи. Ngakho-ke , kungenzeka ukuba uqhubekele opharetha balolu hlobo lokuxhumana ngaphandle kokungabaza.