REPEATERS
Overview
Why wireless network needs repeaters?
Installing a repeater is one of the ways to realize small network capacity with large coverage area, because:
- A repeater can ensure the network coverage without need to increase the number of BTS (Base Transceiver Station);
- The cost of repeater system is sharply lower than that of microcell which has the same effect with the repeater.
A repeater is mainly applied in the area where the BTS signal is too weak. It works as a relay to amplify the BTS signal and then transmit the amplified signal to further and wider area to expand the network coverage area.
A repeater can obviously expand the coverage of BTS, while the investment for construction of cellular network is sharply reduced (the investment of one repeater is only one tenth of that of a BTS). Especially in special environment like high buildings, underground zone (e.g. subway) and blind areas, repeater can give full play to its advantages.
According to the signal transmission method, the cellular repeater can be classified into three types:
- RF Repeater (RFR) - CDMA / GSM / WCDMA: signal is relayed via radio frequency wave at the same frequency with BTS; it can be divided into 3 sub-categories:
- Band-Selective RF Repeater: to amplify all signals in the whole band (bandwidth is customized);
- Channel-Selective RF Repeater: to amplify only the signals transmitted in the customized 1 (2 or 4) channel;
- Mini Repeater: to realize small in-building coverage with compact size.
- Frequency Shift Repeater (FSR) - CDMA / GSM / WCDMA: signal is relayed via radio frequency wave at different frequency from BTS.
- Fiber Optic Repeater (FOR) - CDMA / GSM / WCDMA: signal is relayed via fiber optic cable.
And for better broadcasting of wireless terrestrial digital TV signal, our Digital TV Repeater provides an affordable & reliable solution.
love n prayers
