Uhlelo lwe-Fiber Optic Cellular Repeaters (FOR) luklanyelwe ukuxazulula izinkinga zesignali yeselula ebuthakathaka endaweni ekude ne-BTS (Base Transceiver Station) futhi inenethiwekhi yentambo ye-fiber optic ngaphansi komhlaba.
Xazulula noma yiziphi izindawo okunzima ukuzifinyelela!
Isistimu yonke ye-FOR inezingxenye ezimbili: Iyunithi Yokunikela kanye Neyunithi Ekude.Zidlulisa ngokusobala futhi zikhulise isignali engenantambo phakathi kwe-BTS (Base Transceiver Station) namaselula ngezintambo ze-fiber optic.
Iyunithi ye-Donor ithwebula isignali ye-BTS nge-coupler eqondile evalwe ku-BTS (noma ngokudluliswa kwe-RF emoyeni ovulekile nge-Donor Antenna), bese iyiguqula ibe isignali ye-optic bese idlulisela isignali ekhulisiwe Kuyunithi Ekude ngezintambo ze-fiber optic.Iyunithi Ekude izoguqula isignali ye-optic ibe isignali ye-RF futhi inikeze isignali ezindaweni lapho ukutholakala kwenethiwekhi kungenele.Futhi isignali yeselula nayo iyakhuliswa futhi idluliselwe ku-BTS ngendlela ehlukile.
I-KingtoneI-Fiber Optic Repeaters uhlelo lwakhelwe ukuxazulula izinkinga zesignali yeselula ebuthakathaka, eshibhe kakhulu kunokusethwa kwe-Base Station entsha (BTS).Ukusebenza okuyinhloko kohlelo lwe-RF Repeaters: Ukuze uthole isixhumanisi esiphansi, amasignali asuka ku-BTS aphakelwa ku-Donor Unit (DOU), i-DOU bese iguqula isignali ye-RF ibe isignali ye-laser bese iphakela ku-fiber ukuze idluliselwe ku-Remote Unit(ROU).I-RU bese iguqula isignali ye-laser ibe isignali ye-RF, futhi isebenzisa Isihlelamandla ukuze ikhulise amandla aphezulu ku-IBS noma i-antenna yokumboza.Ukuze uthole isixhumanisi phezulu, Ingabe inqubo yokuhlehla, amasiginali asuka kumakhalekhukhwini womsebenzisi anikezwa embobeni ye-MS ye-DOU.Nge-duplexer, isignali ikhuliswa isikhulisi somsindo ophansi ukuze kuthuthukiswe amandla esignali.Bese amasiginali anikezwa i-RF fibre optical module bese iguqulelwa kumasiginali ye-laser, bese isiginali ye-laser idluliselwa ku-DOU, isiginali ye-laser esuka ku-ROU iguqulelwa kusignali ye-RF nge-RF optical transceiver.Bese amasiginali e-RF akhuliswa abe amasiginali wamandla engeziwe anikezwa i-BTS.
Izici
- I-aluminium-alloy casing inokumelana okuphezulu nothuli, amanzi kanye nokugqwala;
- I-antenna ye-Omni-directional coverage ingatholwa ukuze kwandiswe ukumbozwa okwengeziwe;
- Ukwamukela imojula ye-WDM (Wavelength Division Multiplexing) ukuze uthole ukudluliswa kwebanga elide;
- Izinga lokudluliswa kwesignali elizinzile nelithuthukisiwe;
- Iyunithi Yomnikeli Ingakwazi ukusekela amayunithi angama-4 akude ukuze kwandiswe ukusetshenziswa kwentambo ye-fiber optic;
- Izimbobo ze-RS-232 zinikeza izixhumanisi zencwajana yokubhala ukuze zigadwe endaweni kanye nemodemu engenantambo eyakhelwe ngaphakathi ukuze uxhumane ne-NMS (Isistimu Yokulawula Inethiwekhi) engagada ikude isimo sokusebenza sophinda futhi ilande imingcele yokusebenza kophindayo.
| UPro | Con |
|---|---|
|
|
DI-OU+ROU Ukucaciswa Kobuchwepheshe Kwesistimu Yonke
| Izinto | Isimo sokuhlola | Ukucaciswa Kwezobuchwepheshe | Imemo | |
| uplink | isixhumanisi esingezansi | |||
| I-Frequency Range | Ukusebenza ku-band | 824MHz-849MHz | 869MHz-894MHz |
|
| I-Max Bandwidth | Ukusebenza ku-band | 25MHz |
| |
| Amandla Okukhipha (Ubukhulu.) | Ukusebenza ku-band | 37±2dBm | 43±2dBm | Ngokwezifiso |
| I-ALC (dB) | Okokufaka engeza i-10dB | △Po≤±2 |
| |
| I-Max Gain | Ukusebenza ku-band | 90±3dB | 90±3dB | ngokulahleka kwendlela ye-optic engu-6dB |
| Thola Ibanga Eliguquguqukayo(dB) | Ukusebenza ku-band | ≥30 |
| |
|
Thola i-Linear eguquguqukayo (dB) | 10dB | ±1.0 |
| |
| 20dB | ±1.0 |
| ||
| 30dB | ±1.5 |
| ||
| I-Ripple in Band(dB) | Umkhawulokudonsa Osebenzayo | ≤3 |
| |
| Ileveli yokufaka enkulu | Qhubeka u-1min | -10 dBm |
| |
| Ukulibaziseka kokudlulisela (thina) | Ukusebenza ku-band | ≤5 |
| |
| Umfanekiso Womsindo (dB) | Ukusebenza ku-band | ≤5 (Max.gain) |
| |
| I-Intermodulation Attenuation | 9kHz～1GHz | ≤-36dBm/100kHz |
| |
| 1GHz ~12.75GHz | ≤-30dBm/1MHz |
| ||
| Imbobo ye-VSWR | Ichweba le-BS | ≤1.5 |
| |
| I-MS Port | ≤1.5 | |||
