Makina a Fiber Optic Cellular Repeaters (FOR) adapangidwa kuti athe kuthana ndi zovuta zama siginecha am'manja ofooka m'malo omwe ali kutali ndi BTS (Base Transceiver Station) ndipo ali ndi fiber optic cable network mobisa.
Konzani madera aliwonse ovuta kufika!
Dongosolo lonse la FOR lili ndi magawo awiri: Donor Unit ndi Remote Unit.Amapereka ndikukulitsa chizindikiro chopanda zingwe pakati pa BTS (Base Transceiver Station) ndi mafoni kudzera pazingwe za fiber optic.
Dongosolo la Donor limagwira chizindikiro cha BTS kudzera pa cholumikizira chachindunji chotsekedwa ku BTS (kapena kudzera panjira yotseguka ya RF kudzera pa Donor Antenna), kenako ndikuisintha kukhala chizindikiro cha optic ndikutumiza siginecha yokwezeka ku Remote Unit kudzera pa zingwe za fiber optic.Remote Unit itembenuzanso chizindikiro cha optic kukhala siginecha ya RF ndikupereka chizindikiro kumadera omwe kulumikizidwa kwa netiweki sikukwanira.Ndipo siginecha yam'manja imakulitsidwanso ndikutumizidwanso ku BTS kudzera mbali ina.
KingtoneFiber Optic Repeaters adapangidwa kuti athetse mavuto a siginecha yofooka yam'manja, yomwe ndiyotsika mtengo kwambiri kuposa kukhazikitsa Base Station (BTS).Kugwira ntchito kwakukulu kwa RF Repeaters system: Pa ulalo wapansi, ma sign ochokera ku BTS amaperekedwa ku Donor Unit (DOU), DOU kenako amasintha chizindikiro cha RF kukhala chizindikiro cha laser kenako amadyetsa ku fiber kuti atumize ku Remote Unit (ROU).RU ndiye sinthani chizindikiro cha laser kukhala chizindikiro cha RF, ndikugwiritsa ntchito Power Amplifier kukulitsa mphamvu yayikulu kukhala IBS kapena mlongoti wophimba.Pa ulalo wa mmwamba, Ndi njira yosinthira, ma siginecha ochokera kwa ogwiritsa ntchito amaperekedwa ku doko la DOU la MS.Kudzera pa duplexer, siginecha imakulitsidwa ndi amplifier yaphokoso yotsika kuti ipititse patsogolo mphamvu yazizindikiro.Kenako ma sign amadyetsedwa ku RF fiber optical module kenako amasinthidwa kukhala ma siginecha a laser, ndiye chizindikiro cha laser chimatumizidwa ku DOU, chizindikiro cha laser chochokera ku ROU chimasinthidwa kukhala chizindikiro cha RF ndi RF Optical transceiver.Kenako ma siginecha a RF amakulitsidwa kuzizindikiro zamphamvu zoperekedwa ku BTS.
Mawonekedwe
- Aluminiyamu alloy casing ali ndi kukana kwambiri fumbi, madzi ndi corroding;
- Mlongoti wa Omni-directional coverage antenna ukhoza kutengedwa kuti uwonjezere kufalikira;
- Kutengera gawo la WDM (Wavelength Division Multiplexing) kuti muzindikire kufalikira kwakutali;
- Khalidwe lokhazikika komanso labwino lotumizira ma sigino;
- Gawo limodzi la Opereka litha kuthandizira mpaka ma Units 4 akutali kuti apititse patsogolo kugwiritsa ntchito chingwe cha fiber optic;
- Madoko a RS-232 amapereka maulalo ku kabuku koyang'anira kwanuko komanso modemu yolumikizidwa yopanda zingwe kuti mulumikizane ndi NMS (Network Management System) yomwe imatha kuyang'anira patali momwe obwereza amagwirira ntchito ndikutsitsa magawo ogwiritsira ntchito kwa wobwereza.
| Pro | Con |
|---|---|
|
|
DOU+ROU Mfundo Zaukadaulo Zadongosolo Lonse
| Zinthu | Mkhalidwe Woyesera | Kufotokozera zaukadaulo | Memo | |
| uplink | kutsitsa | |||
| Nthawi zambiri | Kugwira ntchito mu band | 824MHz-849MHz | 869MHz-894MHz |
|
| Max Bandwidth | Kugwira ntchito mu band | 25MHz |
| |
| Mphamvu Zotulutsa (Max.) | Kugwira ntchito mu band | 37±2dBm | 43±2dBm | Zosinthidwa mwamakonda |
| ALC (dB) | Onjezani 10dB | △Po≤±2 |
| |
| Max Gain | Kugwira ntchito mu band | 90±3dB | 90±3dB | ndi 6dB optic njira yotayika |
| Gain Adjustable Range(dB) | Kugwira ntchito mu band | ≥30 |
| |
|
Pezani Zosintha Zosinthika (dB) | 10dB pa | ±1.0 |
| |
| 20dB pa | ±1.0 |
| ||
| 30dB pa | ±1.5 |
| ||
| Ripple mu Band(dB) | Bandwidth Yogwira Ntchito | ≤3 |
| |
| Kulowetsa kwa Max | Pitirizani 1min | -10 dBm |
| |
| Kuchedwa Kutumiza (ife) | Kugwira ntchito mu band | ≤5 |
| |
| Chithunzi cha Noise (dB) | Kugwira ntchito mu band | ≤5 (Max.gain) |
| |
| Intermodulation Attenuation | 9kHz ~ 1GHz | ≤-36dBm/100kHz |
| |
| 1 GHz ~ 12.75GHz | ≤-30dBm/1MHz |
| ||
| Chithunzi cha VSWR | BS Port | ≤1.5 |
| |
| MS Port | ≤1.5 | |||
