1. DVB-T SYSTEM; 2. DTV TURN-KEY SOLUTION 3. UHF Transmission 4. COFDM Modulation

 

UHF+DVB-T system

Multi-channel Multi-point Distribution System Digital TV TS signals are sent to QAM/QPSK/COFDM modulator, output the digital RF signals. These RF signals be sent to MMDS transmitter directly after mixing. After magnified by power, these signals are feed to the transmitting antenna by wave-guide for transmitting. MMDS can save the program channels (a bandwidth of 8M can contain 6~8 PAL programs); the power is low; the anti-jamming ability is strong; its easy to encrypt; it can offer data broadcast, NVOD and other operation besides digital TV.

Compositions and Functions

              Combiner------it adds the multi-channel RF signals (single channel MMDS within the power synthesizer does not need this machine).               MMDS transmitter------inputs digital modulating signals and outputs powerful transmitting signals after frequency conversion and power magnified. MMDS transmitter is divided into 2 species: indoor broadband/single channel and outdoor broadband.               Wave-guide------it feeds the transmitting power to transmitting antenna.               Transmitting antenna------it transmits MMDS power.