Yintoni indawo yeFresnel kunye neCCQ (uMgangatho woQhagamshelwano lomThengi) okanye izinto ezisisiseko zebhulorho engenazingcingo ekumgangatho ophezulu

Iziqulatho

CCQ - yintoni na?
Izinto ezintathu eziphambili ezichaphazela umgangatho weCCQ.
Ummandla weFresnel - yintoni na?
Ubalwa njani ummandla weFresnel?

Kweli nqaku ndifuna ukuthetha malunga nezinto ezisisiseko zokwakha ibhulorho engenazingcingo ekumgangatho ophezulu, kuba "abakhi benethiwekhi" abaninzi bakholelwa ukuba kuya kwanela ukuthenga izixhobo zenethiwekhi ezikumgangatho ophezulu, ufake kwaye ufumane i-100% yokubuya kubo - leyo. ekugqibeleni ayinguye wonke umntu ophumelelayo.

CCQ - yintoni na?

I-CCQ (uMgangatho woQhagamshelwano loMthengi) iguqulelwe ukusuka kwisiNgesi ngokuthi “umgangatho woqhagamshelo lomxhasi” - othi, ngokomgaqo, ubonise umlinganiselo wepesenti yethiyori enokwenzeka ukuya kweyona ndlela ikhoyo yesitishi, ngamanye amazwi, ipesenti yesiphumo esiphunyeziweyo ngokona kuphezulu kunokwenzeka. kwisixhobo esithile.

Ngokomzekelo, usebenzisa izixhobo ezinobuninzi obunokwenzeka be-200 Mbit / s, kodwa ngokwenene ishaneli yangoku i-100 Mbit / s - kule meko i-CCQ yi-50%

Kwizixhobo zenethiwekhi UMikrotik и Ubiquiti kukho izikhombisi ezibini ezahlukeneyo
Tx. I-CCQ (Thumela i-CCQ) - izinga lokudluliselwa kwedatha.
Rx. I-CCQ (Yamkela i-CCQ) - isantya sokufumana idatha.

Izinto ezintathu eziphambili ezichaphazela umgangatho weCCQ

1. Ukulungelelaniswa kwee-eriyali ezimbini. Ukuba sithetha ngebhulorho engenazingcingo, kuyacaca ukuba i-eriyali kufuneka zijongane ngokuchanekileyo kangangoko kunokwenzeka, “iliso ngeliso.”

Ukuba ufuna ibhuloho ye-Wi-Fi ye-point-to-multipoint, ngoko ekuqaleni kufuneka ucinge nge-architecture yonke ukusuka kwi-antenna yecandelo lomnikezeli ukuya kumxhasi, ukwenzela ukuba badibanise ngokuchanekileyo ngokusemandleni.

2. Ubukho bengxolo kwitshaneli. Ngaphambi kokuthatha isigqibo malunga nokuphindaphinda kwebhulorho ye-Wi-Fi, qiniseka ukuba ukhangele i-frequency nganye malunga nobukho bengxolo, ngokusekelwe kule tshekhi, khetha i-frequency elayishiwe ngaphantsi.

3. Indawo yeFresnel.

Ummandla weFresnel - yintoni na?

Indawo yeFresnel ngumthamo wetshaneli yamaza erediyo phakathi kwee-eriyali ezimbini.

Umthamo omkhulu wetshaneli ubekwe kwindawo ephakathi phakathi kwee-eriyali ezimbini.

Ngowona mgangatho uphezulu wophawu, kufuneka ukhethe eyona ndawo icocekileyo, zombini ukusuka kwizithintelo zomzimba kunye namaza erediyo (njengoko kuxoxwe ngawo kumhlathi wesibini).

Ubalwa njani ummandla weFresnel?

Ifomula yokubala indawo yeFresnel kwindawo yayo esembindini:

D-umgama (km)
f - frequency (GHz)

Ifomula yokubala indawo yeFresnel nangaliphi na ixesha, umzekelo kumqobo:

f - frequency (GHz)
D1 - umgama ukuya kwindawo yokubala oyifunayo, ukusuka kwi-eriyali yokuqala (km)
D2 - umgama ukuya kwindawo yokubala oyifunayo, ukusuka kwi-eriyali yesibini (km)

Emva kokuba usebenze ngokucokisekileyo kwezi zinto zintathu, ekugqibeleni uya kufumana ibhulorho engenazingcingo enesona santya siphezulu sokudlulisa idatha.

umthombo: www.habr.com