Iwo ekutanga maitiro ebhinari dijitari modulation ndeaya:Binary amplitude keying (2ASK) -kushanduka kweamplitude yechiratidzo chekutakura; Binary frequency shift keying (2FSK) - frequency shanduko yechiratidzo chekutakura; Binary phase shift keying (2PSK)—chikamu chekuchinja kwechiratidzo chekutakura. Differential phase shift keying (DPSK) yakaitwa nekuti chikamu cheiyo 2PSK system yaive isina chokwadi.
2ASK uye 2PSK zvese zvinoda zvakapetwa kaviri bandwidth sechiyero chechiratidzo, nepo 2FSK ichida bandwidth yakawanda kupfuura 2ASK uye 2PSK.
Iyo bit yekukanganisa mwero weakasiyana madhijitari modulation masisitimu anoenderana neiyo yekuisa chiratidzo-kune-ruzha reshiyo r yedemodulator. Panyaya ye-anti-additive Gaussian white noise, yakabatana 2PSK ine basa rakanakisisa, rinoteverwa ne2FSK, uye 2ASK ndiyo yakaipisisa.
Bvunza ndiyo imwe yenzira dzekutanga dzekutanga modulation. Zvayakanakira ndezvekuti inoshandisa yakakwira-frequency bhendi uye ine midziyo iri nyore. Zvazvinoita ndezvekuti hazviitishanda zvakanaka uchipokana neruzha uye inonzwa kushanduka kwemaitiro echiteshi, izvo zvinoita kuti zviome kuwana sampling anosarudza kushanda mune yakanakisa sarudzo pachikumbaridzo mamiriro.
FSK inzira yakakosha yekumisikidza mukukurukurirana kwedhijitari. Kubatsira kwayo ndeyokuti ine simba rakasimba rinopesana nekupindira uye harina kukanganiswa nekushandurwa kwemagetsi emagetsi, saka FSK inonyanya kukodzera kuparara kwemigwagwa; Izvo zvisingabatsiri ndezvokuti bhendi rakagara rakafara, kunyanya kune mf-sk, uye kushandiswa kwebhendi kwakaderera. Parizvino, iyo FM system inonyanya kushandiswa kune yepakati uye yakaderera-kumhanya kufambisa data.
PSK kana DPSK inzira yemodulation ine yakanyanya kutapurirana kunyatsoshanda. Kugona kwayo kunopesana neruzha kune simba kupfuura iyo ASK neFSK, uye haisi nyore kukanganiswa nekuchinja kwemaitiro echiteshi. Naizvozvo, yakave yakashandiswa zvakanyanya mukukwirira uye yepakati-kumhanyisa data kutapurirana. Absolute phase shift (PSK) ine dambudziko remutakuri wechikamu kusanzwisisika mukuwirirana demodulation, iyo isingawanzo shandiswa mukutapurirana zvakananga mukuita. MDPSK inonyanya kushandiswa.
Zviri pamusoro ndicho chinyorwa "Binary digital modulation," yakaunzwa kwauri neShenzhen HDV photoelectric Technology Co., Ltd. Zvigadzirwa zvekutaurirana zvinogadzirwa nekavha yekambani:
Zvikamu zvemodule: optical fiber modules, Ethernet modules, Optical fiber transceiver modules, Optical fiber access modules, SSFP Optical modules,uyeSFP optical fibers, nezvimwewo.
ONUchikamu: EPON ONU, AC ONU, Optical fiber ONU, CATV ONU, GPON ONU, XPON ONU, nezvimwewo.
OLTkirasi: kuchinja OLT, GPON OLT, EPON OLT, kutauriranaOLT, nezvimwewo.
Izvo zviri pamusoro module zvigadzirwa zvinogona kupa rutsigiro kune akasiyana network mamiriro. Nyanzvi uye yakasimba R&D timu inogona kubatsira vatengi nenyaya dzehunyanzvi, uye timu inofunga uye ine hunyanzvi bhizinesi inogona kubatsira vatengi kuwana masevhisi emhando yepamusoro panguva yepamberi yekubvunzana uye mushure mekugadzira basa. Tinokugamuchiraitaura nesukune chero rudzi rwekubvunza.
