Sistemụ nnyefe ikuku COFDMnwere atụmanya ngwa sara mbara n'ọtụtụ mpaghara, ọkachasị na ngwa bara uru na njem nwere ọgụgụ isi, ahụike smart, obodo mara mma na mpaghara ndị ọzọ, ebe ọ na-egosipụta n'ụzọ zuru oke arụmọrụ ya, nkwụsi ike na ntụkwasị obi ya.
Uru ya dị ka iji ụdịdị dị elu, ikike mgbochi mgbochi multipath siri ike, nnyefe data dị elu na nchekwa dị elu na-eme ka sistemụ mgbasa ozi ikuku COFDM nwee nnukwu ikike mmepe.
Site na mmepe ngwa ngwa nke sayensị na teknụzụ,teknụzụ nkwukọrịta ikukuejirila ya mee ihe n'ụzọ dị iche iche.N'ime ha, usoro mgbasa ozi ikuku nke COFDM (Coded Orthogonal Frequency Division Multiplexing) ejirila nwayọọ nwayọọ ghọọ teknụzụ kpakpando na mpaghara nkwukọrịta ikuku n'ihi iji ụdịdị dị iche iche na-arụ ọrụ nke ọma na ikike mgbochi multi-multipath dị mma.
Edemede a ga-enyocha nke ọma ụkpụrụ, ọnọdụ ngwa na uru nke sistemụ mgbasa ozi ikuku COFDM ma e jiri ya tụnyere teknụzụ ndị ọzọ.
1. Ụkpụrụ nke usoro mgbasa ozi ikuku COFDM
Usoro mgbasa ozi ikuku COFDM na-eji koodu ntinye ọwa, mgbanwe mgbaàmà na teknụzụ nnyefe data iji ghọta nnyefe nke data onyonyo.Nke mbụ, ntinye koodu ọwa na-akpakọ ma na-edepụta data onyonyo iji belata ọnụọgụ data ekesara.Mgbe ahụ, mgbama modulation na-agbanwe data etinyere na onye na-ebu ya na bandwit akọwapụtara iji ghọta mgbanwe dị iche iche nke data ahụ.A na-eziga akara ngosi gbanwetụrụ na njedebe nnata site na nnyefe data iji mezue nnyefe ikuku nke data onyonyo.
2. Ihe ndapụta ngwa nke sistemụ nnyefe ikuku COFDM
2.1.Ụgbọ njem nwere ọgụgụ isi
N'ime ụgbọ njem nwere ọgụgụ isi, enwere ike iji usoro mgbasa ozi ikuku COFDM na nlekota okporo ụzọ, nlekota ụgbọ ala, njikwa akara okporo ụzọ, wdg iji melite arụmọrụ okporo ụzọ ma hụ na nchekwa okporo ụzọ.
Dịka ọmụmaatụ, 100 bit nke data kwesịrị ịgbanwemakanyefeeing.Mbụ gbanwee ya ka ọ bụrụ 200 bits,.Mgbe anabatara mgbaàmà, ọbụlagodi na enwere nsogbu na nnyefe nke 100 bits, data ziri ezi ka nwere ike imebi.Na nkenke, ọ bụ ịgbakwunye redundancy tupu modulation iji melite ntụkwasị obi nke nnyefe.A na-akpọ nke a mmezi njehie ime (FEC) na sistemụ COFDM.Na mt bụ ihe dị mkpa nke usoro COFDM.
2.2.Nlekọta ahụike mara mma
N'ihe gbasara nlekọta ahụike smart, usoro mgbasa ozi ikuku COFDM nwere ike ịrụ ọrụ dị ka telemedicine, mgbasa ozi ịwa ahụ ikuku na-ebi ndụ, na nnyefe oge nke ihe oyiyi ahụike, na-emeziwanye arụmọrụ na ogo ọrụ ahụike.
2.3.Obodo mara mma
N'ọhịa nke smart obodo, COFDM wireless nnyefe usoro nwere ike na-eji na obodo nchekwa, gburugburu ebe obibi nlekota oru, nwere ọgụgụ isi ọkụ, wdg iji welie ọgụgụ isi larịị nke obodo management na imeziwanye ndụ nke ụmụ amaala.
3.Uru nke COFDM ikuku mgbasa ozi
Tụnyereteknụzụ nkwukọrịta ikuku ndị ọzọ, COFDM wireless nnyefe usoro nwere ndị a uru:
1. Nnukwu ụdịdị dị iche iche itinye n'ọrụ
Teknụzụ COFDM nwere ike iji akụrụngwa bandwit zuru oke ma melite ojiji ụdịdị dị iche iche site na ịgbasa data n'elu ọtụtụ ndị na-ebu ụgbọ ala maka nnyefe.
2. Ike mgbochi mgbochi multipath siri ike
Teknụzụ COFDM na-eji orthogonality dị n'etiti ndị na-ebugharị orthogonal iji kewapụ akara ngosi nke ụzọ dị iche iche nke ọma na njedebe nnabata ma belata mmetụta nke nnyonye anya multipath.
Site n'iji teknụzụ modulation dị elu yana algorithms nzuzo nke ọma, usoro nnyefe ikuku COFDM nwere ike nweta nnyefe data dị elu.
4. Nchekwa dị elu
Teknụzụ COFDM na-eji algọridim ezoro ezo iji ezoro ezo ma bufee data, na-echekwa nchekwa nke data ebufere nke ọma.Usoro mgbasa ozi ikuku COFDM nwere atụmanya ngwa sara mbara n'ọtụtụ mpaghara, ọkachasị na ngwa bara uru na njem nwere ọgụgụ isi, ahụike smart, obodo smart na mpaghara ndị ọzọ, ebe ọ na-egosipụta n'ụzọ zuru oke arụmọrụ ya, nkwụsi ike na ntụkwasị obi.Uru ya dị ka iji ụdịdị dị elu, ikike mgbochi mgbochi multipath siri ike, nnyefe data dị elu na nchekwa dị elu na-eme ka sistemụ mgbasa ozi ikuku COFDM nwee nnukwu ikike mmepe.
Site na mmepe nke sayensị na teknụzụ na-aga n'ihu, anyị nwere ihe mere anyị ga-eji kwenye na usoro mgbasa ozi ikuku COFDM ga-arụ ọrụ dị mkpa na mpaghara nkwurịta okwu ikuku n'ọdịnihu.
4.Mkpebi
Dabere na teknụzụ COFDM,Nkwukọrịta IWAVEewepụtala ọtụtụ ngwa mgbasa ozi ikuku, bụ nke a na-ejikarị eme ihe n'akụkụ ndị a.Akụrụngwa nke ụlọ ọrụ anyị mepụtara na-elekwasị anyannyefe ikuku nke ogologo anyavidiyo dị elu, karịsịa na nnyefe ikuku nke drones, nke na-enye nnukwu mma maka ndị na-ahụ maka nchebe n'ụsọ oké osimiri, nnapụta ọdachi mberede, ụgbọ njem smart, wdg.
Oge nzipu: Sep-22-2023
