Sengoliloeng sena ke tlo bua ka Moetso oa Sistimi ea Puisano ka lintlha tse kenyelletsang likarolo tsa bona tsa 5, (1) Khoutu ea Mohloli le ho hlakisa, (2) Khoutu le ho hlophisa liteishene, (3) Encryption le decryption, (4) Digital modulation le nyenyefatso, (5) Kamahanyo. Ha re qoele ka botebo...
Mohlala oa Sistimi ea Puisano ea Analog
Digital Communication System Model
(1) Likhoutu tsa mohloli le li-decoding:
Mesebetsi e 'meli ea mantlha: e' ngoe ke ho ntlafatsa katleho ea phetiso ea tlhahisoleseling, ke hore, ho fokotsa palo ea matšoao ho fokotsa sekhahla sa matšoao ka theknoloji e itseng ea compression coding. Ea bobeli ke ho phethela phetoho ea analogue/digital (A/D). Ke hore, ha mohloli oa tlhahisoleseding o fana ka letšoao la analogue, mohloli oa encoder o o fetola letšoao la digital ho hlokomela phetiso ea digital ea letšoao la analog.
(2) Khouto le decoding ea likanale:
Mosebetsi: Ho etsa taolo ea liphoso. Matshwao a dijithale a ka angoa ke lerata le liphoso tse ling nakong ea phetiso. E le ho fokotsa liphoso, mochine oa encoder le matšoao a tlhahisoleseding e fetisitsoeng a eketsa likarolo tsa tšireletso (matšoao a tlhokomelo) ho latela melao e itseng ho theha seo ho thoeng ke "anti-interference coding". Decoder ea kanale qetellong ea ho amohela e khetha ho latela melao e fapaneng le e qetellong ea ho romella. E fumana liphoso kapa e li lokisa, e leng se etsang hore tsamaiso ea puisano e tšepahale haholoanyane.
(3) Encryption le decryption:
E le ho netefatsa ts'ireletso ea tlhahisoleseding e fetisitsoeng, tatellano e fetisitsoeng ea digital e qhekelloa ka maiketsetso-ke hore, password e kenyelelitsoe. Mokhoa ona o bitsoa encryption. Ho khutlisetsa tlhahisoleseling ea mantlha ke decryption.
(4) Digital modulation le demodulation:
Digital modulation: Ponahalo ya letshwao la dijithale baseband e fetisetswa ho maqhubu a phahameng ho etsa letshwao la bandpass le loketseng phetiso ya kanale. Qetellong ea ho amohela, lets'oao la baseband ea dijithale le ka khutlisoa ka tšebeliso e kopaneng kapa ho theola batho ka mokhoa o sa kopaneng.
(5) Kamahanyo:
Synchronization: Ke ho boloka lipontšo lipheletsong tse peli tsa transceiver li hokahantsoe ka nako, 'me ke ntho e hlokahalang ho netefatsa ts'ebetso e hlophisehileng, e nepahetseng le e tšepahalang ea sistimi ea puisano ea dijithale.
Ena ke sehlooho se reng "Communication System Model" e tlisoang ho uena ke Shenzhen HDV phoelectron Technology Co., Ltd. tšepo ea hore sehlooho sena se ka u thusa ho eketsa tsebo ea hau. Ntle le sengoloa sena haeba u batla k'hamphani e ntle ea moetsi oa lisebelisoa tsa puisano tsa fiber o ka e nahanangmabapi le rona.
Shenzhen HDV phoelectron Technology Co., Ltd.haholo-holo moetsi oa lihlahisoa tsa puisano. Hona joale, thepa e hlahisoang e koahelaLetoto la lihlooho tse ONU, letoto la lihlooho tsa optical module, Letoto la lihlooho tse OLT, leletoto la li-transceiver. Re ka fana ka litšebeletso tse ikhethileng bakeng sa maemo a fapaneng. e ka sebediswang bakeng sa fapaneng Fana ka tšebeletso ea boleng bo holimo e tsamaellanang le litlhoko tsa basebelisi. O amohelehile horerisana.