Njira zoyambira zosinthira digito ndi:Binary amplitude keying (2ASK) -kusintha kwa matalikidwe a chizindikiro chonyamulira;Binary frequency shift keying (2FSK) -kusintha pafupipafupi kwa chizindikiro chonyamulira;Binary phase shift keying (2PSK) -kusintha kwagawo kwa chizindikiro chonyamulira.Differential phase shift keying (DPSK) idapangidwa chifukwa gawo la dongosolo la 2PSK linali losatsimikizika.
2ASK ndi 2PSK onse amafunikira bandwidth yowirikiza kawiri kuposa kuchuluka kwa chizindikiro, pomwe 2FSK imafunikira bandwidth yochulukirapo kuposa 2ASK ndi 2PSK.
Kulakwitsa pang'ono kwamakina osiyanasiyana osinthira digito kumatengera kuyika kwa siginolo-to-noise ratio r ya demodulator.Pankhani ya anti-additive Gaussian phokoso loyera, 2PSK yogwirizana ili ndi ntchito yabwino, yotsatiridwa ndi 2FSK, ndipo 2ASK ndiyoyiyipitsitsa.
Kufunsa ndi imodzi mwa njira zoyambirira zosinthira mawu.Ubwino wake ndikuti umagwiritsa ntchito gulu lapamwamba kwambiri komanso lili ndi zida zosavuta.Zoyipa zake ndikuti siziteroimagwira ntchito bwino polimbana ndi phokoso ndipo imakhudzidwa ndi kusintha kwa mayendedwe, zomwe zimapangitsa kuti zikhale zovuta kupeza wosankha zitsanzo kuti agwire bwino ntchito poyambira chisankho.
FSK ndi njira yofunikira kwambiri yosinthira kulumikizana kwa digito.Ubwino wake ndikuti uli ndi mphamvu zotsutsana ndi zosokoneza ndipo sizimakhudzidwa ndi kusintha kwa magawo a njira, kotero FSK ndiyoyenera makamaka kwa njira zowonongeka;Choyipa ndichakuti gulu lokhalamo ndi lalikulu, makamaka la mf-sk, ndipo kugwiritsidwa ntchito kwa bandi ndikotsika.Pakalipano, makina a FM amagwiritsidwa ntchito makamaka pofalitsa deta yapakati komanso yotsika kwambiri.
PSK kapena DPSK ndi njira yosinthira yokhala ndi kufalikira kwakukulu.Mphamvu yake yotsutsana ndi phokoso ndi yamphamvu kuposa ya ASK ndi FSK, ndipo sichikhudzidwa mosavuta ndi kusintha kwa mawonekedwe a njira.Chifukwa chake, yakhala ikugwiritsidwa ntchito kwambiri pakutumizirana ma data apamwamba komanso apakatikati.Absolute phase shift (PSK) ili ndi vuto la kusadziwika kwa gawo la carriers mu coherent demodulation, zomwe sizimagwiritsidwa ntchito kawirikawiri pofalitsa mwachindunji.MDPSK imagwiritsidwa ntchito kwambiri.
Zomwe zili pamwambazi ndi nkhani yakuti "Binary digital modulation," yomwe inabweretsedwa kwa inu ndi Shenzhen HDV photoelectric Technology Co., Ltd.
Magawo a module: Optical fiber modules, Ethernet modules, Optical fiber transceiver modules, optical fiber access modules, SSFP Optical modules,ndiSFP kuwala ulusi, ndi zina.
Gulu la ONU: EPON ONU, AC ONU, Optical fiber ONU, CATV ONU, GPON ONU, XPON PA, ndi zina.
kalasi ya OLT: Kusintha kwa mtengo wa OLT, Mtengo wa GPON OLT, EPON OLT, kulankhulana OLT, etc.
Zomwe zili pamwambazi zitha kuthandizira pazochitika zosiyanasiyana zapaintaneti.Gulu la akatswiri komanso lamphamvu la R&D litha kuthandiza makasitomala omwe ali ndi zovuta zaukadaulo, ndipo gulu loganiza bwino komanso laukadaulo litha kuthandiza makasitomala kupeza ntchito zapamwamba panthawi yokambirana zisanachitike komanso pambuyo popanga.Takulandirani kuLumikizanani nafepafunso lamtundu uliwonse.
