Njira yotumizira opanda zingwe ya COFDMali ndi chiyembekezo chogwiritsa ntchito kwambiri m'magawo ambiri, makamaka pakugwiritsa ntchito zoyendera zanzeru, zamankhwala anzeru, mizinda yanzeru, ndi magawo ena, komwe amawonetsa bwino, kukhazikika, ndi kudalirika kwake.
Ubwino wake monga kugwiritsa ntchito ma sipekitiramu ambiri, kuthekera kolimbana ndi njira zambiri zosokoneza, kutumizirana mwachangu kwa data komanso chitetezo chambiri kumapangitsa makina otumizira opanda zingwe a COFDM kukhala ndi kuthekera kwakukulu kwachitukuko.
Ndi chitukuko chofulumira cha sayansi ndi ukadaulo,ukadaulo wolumikizirana opanda zingwewakhala akugwiritsidwa ntchito kwambiri m'madera osiyanasiyana.Pakati pawo, COFDM (Coded Orthogonal Frequency Division Multiplexing) njira yotumizira opanda zingwe pang'onopang'ono yakhala ukadaulo wa nyenyezi m'malo olumikizirana opanda zingwe chifukwa chogwiritsa ntchito bwino ma sipekitiramu komanso kuthekera kotsutsana ndi njira zambiri zosokoneza.
Nkhaniyi ifufuza mozama mfundo, zochitika zogwiritsira ntchito ndi ubwino wa machitidwe opatsirana opanda zingwe a COFDM poyerekeza ndi matekinoloje ena.
1. Mfundo ya COFDM opanda zingwe kufala dongosolo
Dongosolo lotumizira opanda zingwe la COFDM limagwiritsa ntchito khodi ya tchanelo, kusintha ma siginecha ndi matekinoloje otumizira ma data kuti azindikire kutumiza kwa data yazithunzi.Choyamba, ma code code amakanikiza ndikuyika deta yazithunzi kuti muchepetse kuchuluka kwa zomwe zimafalitsidwa.Kenako, kusinthasintha kwa ma siginecha kumasintha zomwe zasungidwa pa chonyamulira mu bandi yafupipafupi kuti izindikire kusuntha kwa datayo.Chizindikiro chosinthidwa chimatumizidwa kumalo olandirira kudzera pakutumiza kwa data kuti amalize kutumiza kwa data popanda zingwe.
2. Zochitika zogwiritsira ntchito makina otumizira opanda zingwe a COFDM
2.1.Mayendedwe anzeru
M'munda wamayendedwe anzeru, makina otumizira opanda zingwe a COFDM angagwiritsidwe ntchito powunika magalimoto, kutsatira magalimoto, kuwongolera ma sign amagalimoto, ndi zina zambiri kuti zithandizire kuyendetsa bwino magalimoto ndikuwonetsetsa chitetezo chamsewu.
Mwachitsanzo, ma bits 100 a data amafunika kusinthidwazakutumizandi.Choyamba sinthani kukhala ma bits 200,.Chizindikiro chikalandiridwa, ngakhale patakhala vuto ndi kutumiza ma bits 100, deta yolondola imatha kuchotsedwabe.Mwachidule, ndikuwonjezera redundancy musanayambe kusinthasintha kuti muthe kudalirika kwa kufalitsa.Izi zimatchedwa Internal Error Correction (FEC) mu COFDM systems.Ndipo it ndi gawo lofunikira la COFDM system.
2.2.Chisamaliro chanzeru
Pankhani ya chithandizo chamankhwala chanzeru, makina otumizira opanda zingwe a COFDM amatha kuzindikira ntchito monga telemedicine, kuwulutsa kwapachipatala popanda zingwe, komanso kutumiza zithunzi zachipatala munthawi yeniyeni, kuwongolera magwiridwe antchito komanso ntchito zachipatala.
2.3.Smart city
Pankhani ya mzinda wanzeru, makina otumizira opanda zingwe a COFDM angagwiritsidwe ntchito pachitetezo cham'matauni, kuyang'anira zachilengedwe, kuunikira kwanzeru, ndi zina zambiri kuti apititse patsogolo luso lanzeru lakuwongolera mizinda ndikuwongolera moyo wa nzika.
3.Ubwino wa COFDM opanda zingwe kufala dongosolo
Poyerekeza ndinjira zina zamaukadaulo zolumikizirana opanda zingwe, COFDM opanda zingwe kufala dongosolo ali ubwino zotsatirazi:
1. Kugwiritsa ntchito kwambiri sipekitiramu
Ukadaulo wa COFDM utha kugwiritsa ntchito mokwanira zida za bandwidth ndikuwongolera kugwiritsa ntchito sipekitiramu pofalitsa deta pamagalimoto angapo kuti atumize.
2. Mphamvu zotsutsana ndi njira zambiri zosokoneza
Ukadaulo wa COFDM umagwiritsa ntchito orthogonality pakati pa ma orthogonal subcarriers kuti alekanitse bwino ma siginecha anjira zosiyanasiyana polandila ndikuchepetsa kusokoneza kwa njira zambiri.
3. Kutumiza kwa data mwachangu kwambiri
Pogwiritsa ntchito ukadaulo wapamwamba kwambiri komanso ma aligorivimu owongolera bwino, makina otumizira opanda zingwe a COFDM amatha kufalitsa mwachangu kwambiri.
4. Chitetezo chachikulu
Ukadaulo wa COFDM umagwiritsa ntchito ma aligorivimu achinsinsi kubisa ndi kutumiza zidziwitso, kuteteza bwino chitetezo cha data yofalitsidwa.Makina otumizira opanda zingwe a COFDM ali ndi chiyembekezo chokulirapo m'magawo ambiri, makamaka pakugwiritsa ntchito mwanzeru zoyendera, zamankhwala anzeru, mizinda yanzeru ndi magawo ena, komwe amawonetsa bwino, kukhazikika komanso kudalirika kwake.Ubwino wake monga kugwiritsa ntchito ma sipekitiramu ambiri, mphamvu zotsutsana ndi njira zambiri zosokoneza, kutumizirana mwachangu kwa data komanso chitetezo chambiri zimapangitsa makina otumizira opanda zingwe a COFDM kukhala ndi kuthekera kwakukulu kwachitukuko.
Ndi chitukuko chosalekeza cha sayansi ndi ukadaulo, tili ndi chifukwa chokhulupirira kuti makina otumizira opanda zingwe a COFDM atenga gawo lofunikira kwambiri panjira yolumikizirana opanda zingwe yamtsogolo.
4.Mapeto
Kutengera luso la COFDM,Malingaliro a kampani IWAVE Communicationswapanga zida zingapo zotumizira opanda zingwe, zomwe zimagwiritsidwanso ntchito kwambiri m'magawo awa.Zida zopangidwa ndi kampani yathu zimayang'ana kwambirikufalitsa opanda zingwe kwa mtunda wautaliKanema wodziwika bwino kwambiri, makamaka pakutumiza kwa ma drones opanda zingwe, komwe kumapereka mwayi kwa oyang'anira chitetezo cha m'mphepete mwa nyanja, kupulumutsa mwadzidzidzi tsoka, kuyenda mwanzeru, ndi zina zambiri.
Nthawi yotumiza: Sep-22-2023
