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Mean Square Error (MSE) pou Lyen mikwo ond
Date:2020/11/12 14:46:57 Hits:
Ki sa ki vle di Erè kare?
Mean Square Error (MSE) se menm jan ak rapò siyal-a-bri (SNR) eksepte ke li kont pou deformation ak entèferans nan adisyon a pouvwa bri.
CableFree mikwo ond ODU
Deformation ka soti nan plizyè sous tankou move Ethernet câbles (pòv plak pwotèj, domaje, oswa bon jan kalite ki ba), degradasyon chemen tankou multipath, oswa Fresnel zòn anpyetman.
Entèferans ka soti nan lòt transmeteur sou gwo kay won an, osi byen ke nan sous andedan yon abri andedan kay la. Transmetè segondè pouvwa andedan yon abri ka lakòz entèferans lè tou pre aparèy la PoE oswa lè sitiye trè pre kablaj la.
Gen maksimòm valè MSE akseptab pou chak modulation ki itil nan detèmine bon jan kalite a nan lyen an. Valè MSE rapòte a sèlman enpòtan pou yon sèl ch-rx chemen, kidonk MSE chak ch-rx chemen dwe evalye pou verifye lyen an ap opere jan yo espere a. Pi ba a nimewo a pi bon an, se konsa yon -35dB se pi bon pase yon -30dB.
Lòt kòz posib pou MSE akseptab
Men sa yo enkli ：
●Paramèt XPIC yo pa kòrèk
●Izolasyon ensifizan ant polarisasyon sou yon lyen XPIC
●Pèfòmans ase pou sipòte segondè modulation QAM
●Dezekilib ant chemen sou yon lyen polarite XPIC doub
Pou plis enfòmasyon
Pou plis enfòmasyon sou mikwo ond Lyen, tanpri Kontakte Nou
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