Kokubili isignali nomsindo ekuxhumaneni kungathathwa njengezinqubo ezingahleliwe ezihluka ngokuhamba kwesikhathi.
Inqubo engahleliwe inezici zokuguquguquka okungahleliwe kanye nomsebenzi wesikhathi, futhi ingachazwa ngemibono emibili ehlukene kodwa ehlobene eduze:①inqubo engahleliwe iqoqo lemisebenzi yesampula engapheli;②Inqubo engahleliwe isethi yezinto eziguquguqukayo ezingahleliwe.
Izici zezibalo zenqubo engahleliwe zichazwa ngomsebenzi wayo wokusabalalisa noma amathuba omsebenzi wokuminyana.Uma izici zezibalo zenqubo engahleliwe zizimele endaweni yokuqala yesikhathi, ibizwa ngokuthi inqubo ezinzile.
Izici zedijithali zingenye indlela emfushane yokuchaza izinqubo ezingahleliwe.Uma inani elilinganisiwe lenqubo lingaguquki futhi umsebenzi wokuhlanganisa okuzenzakalelayo u-R (T1, T1+ τ)= R (T), inqubo ibizwa ngokuthi inqubo yokuma evamile.
Uma inqubo izinzile, kufanele izinze ngokubanzi;kungenjalo, kungase kungabi yiqiniso.Uma isilinganiso sesikhathi senqubo silingana nesilinganiso esihambisanayo sezibalo, inqubo iyi-ergodic.Uma inqubo i-ergodic, ibuye izinzile;kungenjalo, kungase kungabi yiqiniso.
Umsebenzi wokuhlanganisa okuzenzakalelayo u-R (T) wenqubo evamile yokumisa uwumsebenzi olinganayo womehluko wesikhathi ongu-R, futhi u-R (0) ulingana nesamba samandla amaphakathi, angu-R（ τ) inani eliphakeme.Ukuminyana kwe-spectral yamandla (P) ξ (f) umsebenzi wokuzihlanganisa we-Fourier u-R() (i-Wiener Minchin theorem).Lokhu kubhanqwa kokuguqulwa kunquma ubudlelwano bokuguqulwa phakathi kwezizinda zesikhathi nemvamisa.Ukusabalalisa kwamathuba enqubo ye-Gaussian kulandela ukusatshalaliswa okuvamile, futhi incazelo yayo yezibalo ephelele idinga izici zayo zezinombolo kuphela.Ukusabalalisa kwamathuba ohlangothi olulodwa kuncike kuphela encazelweni nasekuhlukeni, futhi ukusabalalisa kwamathuba ezinhlangothi ezimbili kuncike ngokuyinhloko emsebenzini wokuhlanganisa.Inqubo ye-Gaussian iseyinqubo ye-Gaussian ngemva kokuguqulwa komugqa.Ubudlelwano phakathi komsebenzi wokusabalalisa ojwayelekile kanye nomsebenzi we-Q (x) noma we-ERF (x) buwusizo kakhulu ekuhlaziyeni ukusebenza okulwa nomsindo kwezinhlelo zokuxhumana zedijithali.Inqubo ye-stochastic emile Ngemva kokuthi u-I (T) edlule ohlelweni lomugqa, inqubo yokukhipha kwayo engu-ξ 0 (T) nayo izinzile.
Izici zezibalo zezinqubo ezingahleliwe zebhande elincane kanye namagagasi e-sine kanye nomsindo we-Gaussian webhande elincane kufanelekile kakhulu ekuhlaziyweni kwezinhlelo zokuguquguquka, amasistimu we-band-pass, nokuxhumana okungenantambo okufiphalayo kweziteshi eziningi.Ukusabalalisa okuthathu okujwayelekile kwezokuxhumana ukusatshalaliswa kwe-Rayleigh, ukusatshalaliswa kwerayisi, nokusabalalisa okuvamile: imvilophu yesiginali yenkampani yenethiwekhi ye-sinusoidal kanye nebhande elincane.Umsindo we-Gaussian ngokuvamile uwukusabalalisa irayisi.Uma i-amplitude yesiginali inkulu, ivame ukusatshalaliswa okuvamile;lapho i-amplitude incane, cishe ukusatshalaliswa kweRayleigh.
Umsindo omhlophe we-Gaussian uyimodeli efanelekile yokuhlaziya umsindo ongeziwe wesiteshi, futhi umthombo oyinhloko womsindo ekuxhumaneni komsindo oshisayo ungowalolu hlobo lomsindo.Amanani awo nganoma iziphi izikhathi ezimbili ezahlukene awahlobene futhi azimele ngokwezibalo.Ngemuva kokuthi umsindo omhlophe udlule kusistimu ye-band-limited, umphumela uba umsindo okhawulelwe webhendi.Umsindo omhlophe wephasi eliphansi nomsindo omhlophe we-bandpass kuvamile ekuhlaziyweni kwethiyori.
Okungenhla kuyisihloko esithi "inqubo engahleliwe yohlelo lokuxhumana" olethwe kuwe ngabakwa-Shenzhen HDV phoelectron Technology Co., Ltd. ngethemba ukuthi lesi sihloko singakusiza ukukhulisa ulwazi lwakho.Ngaphandle kwalesi sihloko uma ufuna inkampani enhle yabakhiqizi bemishini yokuxhumana ye-fiber ongase uyicabangeleMayelana NATHI.
I-Shenzhen HDV phoelectron Technology Co., Ltd. ingumkhiqizi wemikhiqizo yezokuxhumana.Njengamanje, imishini ekhiqizwayo ihlanganisaUchungechunge lwe-ONU, optical module uchungechunge, Uchungechunge lwe-OLT, futhiuchungechunge lwe-transceiver.Singahlinzeka ngezinsizakalo ezenziwe ngezifiso ezimweni ezahlukahlukene.Wamukelekilebonisana.
