Isistimu yokudlulisa okungenantambo ye-COFDMinamathemba abanzi okusebenza emikhakheni eminingi, ikakhulukazi ekusebenziseni okungokoqobo kwezokuthutha ezihlakaniphile, ezokwelapha ezihlakaniphile, amadolobha ahlakaniphile, neminye imikhakha, lapho ibonisa ngokugcwele ukusebenza kahle kwayo, ukuzinza, nokwethembeka.
Izinzuzo zayo ezifana nokusetshenziswa kwe-spectrum ephezulu, amandla aqinile wokunqanda ukuphazanyiswa kwezindlela eziningi, ukudluliswa kwedatha ngesivinini esikhulu kanye nokuphepha okuphezulu kwenza amasistimu okuthumela okungenantambo e-COFDM abe namandla amakhulu okuthuthuka.
Ngokuthuthuka okusheshayo kwesayensi nobuchwepheshe,ubuchwepheshe bokuxhumana obungenawayaisetshenziswe kabanzi emikhakheni ehlukahlukene.Phakathi kwazo, i-COFDM (Coded Orthogonal Frequency Division Multiplexing) uhlelo lokudlulisa okungenantambo kancane kancane seluphenduke ubuchwepheshe emkhakheni wezokuxhumana okungenantambo ngenxa yokusebenzisa kahle i-spectrum namandla amahle okunqanda ukuphazanyiswa kwezindlela eziningi.
Lesi sihloko sizohlola ngokujulile izimiso, izimo zohlelo lokusebenza kanye nezinzuzo zezinhlelo zokudlulisa okungenantambo ze-COFDM uma kuqhathaniswa nobunye ubuchwepheshe.
1. Isimiso sesistimu yokudlulisa okungenantambo ye-COFDM
Uhlelo lokudlulisa okungenantambo lwe-COFDM lusebenzisa ukubhala ikhodi kwesiteshi, ukushintshwa kwesignali nobuchwepheshe bokudlulisa idatha ukuze kubonakale ukudluliswa kwedatha yesithombe.Okokuqala, ukubhala ikhodi kwesiteshi kucindezela futhi kufake amakhodi idatha yesithombe ukuze kwehliswe inani ledatha edluliswayo.Bese, ukuguqulwa kwesignali kulungisa idatha efakwe ikhodi kusiphathi kubhendi yefrikhwensi eshiwo ukuze kubonakale ukushintsha kwe-spectrum kwedatha.Isignali eshintshiwe ithunyelwa endaweni yokwamukela ngokudluliswa kwedatha ukuze kuqedelwe ukudluliswa kwedatha yesithombe okungenantambo.
2. Izimo zohlelo lokudlulisa okungenantambo lwe-COFDM
2.1.Ezokuthutha ezihlakaniphile
Emkhakheni wezokuthutha ezihlakaniphile, amasistimu okudlulisa okungenantambo e-COFDM angasetshenziswa ekuqaphelweni kwethrafikhi, ekulandeleleni imoto, ekulawuleni amasignali omgwaqo, njll. ukuze kuthuthukiswe ukusebenza kahle kwethrafikhi nokuqinisekisa ukuphepha kwethrafikhi.
Isibonelo, amabhithi edatha ayi-100 adinga ukushintshwaokwehambisaing.Okokuqala shintsha ibe amabhithi angu-200,.Uma isignali yamukelwe, noma ngabe kunenkinga ngokudluliswa kwamabhithi ayi-100, idatha elungile isengakhishwa.Ngamafuphi, kuwukwengeza ukuphindaphindeka ngaphambi kokushintshashintsha ukuze kuthuthukiswe ukwethembeka kokudlulisela.Lokhu kubizwa ngokuthi Ukulungiswa Kwephutha Langaphakathi (FEC) ezinhlelweni ze-COFDM.Namit iyipharamitha ebalulekile yohlelo lwe-COFDM.
2.2.Ukunakekelwa kwezokwelapha okuhlakaniphile
Emkhakheni wokunakekelwa kwezokwelapha okuhlakaniphile, isistimu yokudlulisa okungenantambo ye-COFDM ingabona imisebenzi efana ne-telemedicine, ukusakazwa bukhoma kokuhlinzwa okungenantambo, nokudluliswa kwesikhathi sangempela kwezithombe zezokwelapha, ukuthuthukisa ukusebenza kahle kanye nekhwalithi yezinsizakalo zezokwelapha.
2.3.Idolobha elihlakaniphile
Emkhakheni wedolobha elihlakaniphile, isistimu yokudlulisa okungenantambo ye-COFDM ingasetshenziswa kwezokuphepha zasemadolobheni, ukuqapha indawo ezungezile, ukukhanyisa okuhlakaniphile, njll. ukuthuthukisa izinga elihlakaniphile lokuphatha amadolobha kanye nokwenza ngcono izinga lempilo yezakhamuzi.
3.Izinzuzo COFDM wireless transmission system
Uma kuqhathaniswa neobunye ubuchwepheshe bokuxhumana obungenawaya, isistimu yokudlulisa okungenantambo ye-COFDM inezinzuzo ezilandelayo:
1. Ukusetshenziswa okuphezulu kwe-spectrum
Ubuchwepheshe be-COFDM bungasebenzisa ngokugcwele izinsiza zomkhawulokudonsa futhi buthuthukise ukusetshenziswa kwe-spectrum ngokusabalalisa idatha kuma-subcarrier amaningi ukuze idluliselwe.
2. Ikhono eliqinile lokunqanda ukuphazanyiswa kwezindlela eziningi
Ubuchwepheshe be-COFDM busebenzisa i-orthogonality phakathi kwe-orthogonal subcarriers ukuze bahlukanise ngempumelelo amasignali emizila ehlukahlukene lapho bethola khona futhi kuncishiswe umthelela wokuphazanyiswa kwezindlela eziningi.
3. Ukudluliswa kwedatha enesivinini esikhulu
Ngokusebenzisa ubuchwepheshe bokushintshwa kwe-oda eliphezulu kanye nama-algorithms wokubhala amakhodi asebenzayo, isistimu yokudlulisa okungenantambo ye-COFDM ingafinyelela ukudluliswa kwedatha ngesivinini esikhulu.
4. Ukuvikeleka okuphezulu
Ubuchwepheshe be-COFDM busebenzisa ama-algorithms wokubhala ngemfihlo ukuze kubethelwe futhi kudluliselwe idatha, kuvikela ngempumelelo ukuvikeleka kwedatha edlulisiwe.Uhlelo lokudlulisa okungenantambo lwe-COFDM lunamathemba abanzi okusebenza emikhakheni eminingi, ikakhulukazi ekusebenzeni okungokoqobo kwezokuthutha ezihlakaniphile, ezokwelapha ezihlakaniphile, amadolobha ahlakaniphile kanye neminye imikhakha, lapho lubonisa khona ngokugcwele ukusebenza kahle kwalo, ukuzinza nokwethembeka.Izinzuzo zayo ezifana nokusetshenziswa kwe-spectrum ephezulu, amandla aqinile wokunqanda ukuphazanyiswa kwezindlela eziningi, ukudluliswa kwedatha ngesivinini esikhulu kanye nokuphepha okuphezulu kwenza amasistimu okuthumela okungenantambo e-COFDM abe namandla amakhulu okuthuthuka.
Ngokuthuthuka okuqhubekayo kwesayensi nobuchwepheshe, sinesizathu sokukholelwa ukuthi isistimu yokudlulisa okungenantambo ye-COFDM izodlala indima ebaluleke kakhulu emkhakheni wokuxhumana okungenantambo wesikhathi esizayo.
4.Isiphetho
Ngokusekelwe kubuchwepheshe be-COFDM,IWAVE Communicationsisungule uchungechunge lwemishini yokudlulisela engenantambo, nayo esetshenziswa kabanzi kule mikhakha.Imishini eyenziwe yinkampani yethu igxile kakhulu kuyoukudluliswa okungenawaya kwebanga elideividiyo enencazelo ephezulu, ikakhulukazi ekudluliselweni okungenantambo kwama-drones, okunikeza ukunethezeka okuhle kwabaqaphi bezokuvikela ogwini, ukuhlenga ezinhlekeleleni eziphuthumayo, ezokuthutha ezihlakaniphile, njll.
Isikhathi sokuthumela: Sep-22-2023
