Wireless TV Broadcasting
Most of many countries' territory has one-storey building and low population density. In addition, within the country may be areas with complex terrain (e.g. mountains), where the wiring is economically disadvantageous or even impossible. The creating of a powerful transmitter TV centers with large coverage zones in such regions is impractical. An alternative to high-power broadcasting systems are low-power systems with relatively small coverage zone, but on the other hand, have a low cost and require low capital investments for their deployment. The first task of these systems is to provide high-quality multi-program television residents of small towns. The sources of television programming for broadcasters with such systems can be large television centers, RRLs, satellite teleports, the local studio, etc.
The “ROKS” company develops, manufactures and installs the microwave TV broadcasting systems intended for operation in LoS mode. In all our MMDS (frequency band 2.0 – 7.5 GHz), MVDS (10.0 – 13.5 GHz) and LMDS (20.0 – 30.0 GHz) systems we use original technical solutions based on the technologies, protected by Ukrainian Patents № 24643, № 54275 and № 54644. ROKS systems feature high power efficiency, eco-friendliness and can be completed on up to 90% by our own manufacture products. Our broadcasting systems are installed and operates in many countries with different climatic zones.
| Parameter | MVDS (MITRIS) (Ku-band) |
MMDS (S-band, C-band) |
LMDS (K-band, Ka-band) |
| Operation frequency range, GHz | 10.0 - 13.5 | 2.0 - 7.5 | 20.0 - 30.0 |
| Broadcasting standards | DVB-S / DVB-S2 or DVB-C | DVB-C or DVB-T | DVB-S/S2 or DVB-T |
| Modulation types | QPSK, 8PSK or QAM64 | QAM16/32/64 or COFDM | QPSK, 8PSK or COFDM |
| Coverage zone with one transmitter | up to 50 km | up to 30 km | up to 5km |
| Repeater Hops without regeneration | up to 3 | up to 2 | none |
| Repeater Hops with reregeration | unlimited | unlimited | unlimited |
| Cost of user's equipment | Lowest, because of application of the satellite reception complete set | A bit more expensively than the satellite complete set for reception | Expensive, because of the high cost of subscriber receiver |
| A possible way to receive | individual and collective | individual and collective | collective |
MVDS / MITRIS
MVDS (MITRIS) can operate at frequencies range 10.0 - 13.5 (Ku-band). Broadcasting standards are DVB-S / DVB-S2 or DVB-C. This system is the most popular solution for microwave Wireless TV Broadcasting systems.
MMDS
MMDS (Multichannel Multipoint Distribution Service) is traditionally referred to as "cable TV with no cable". It means MMDS uses everything the same as in traditional cable TV but as delivery medium instead of cable it uses radiowaves.
