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Home > Tech > RF Wireless Module Transmission Mode : Broadband-Common-Cable Wireless-SmartAIR

RF Wireless Module Transmission Mode : Broadband-Common-Cable Wireless-SmartAIR

Broadband common cable transmission

The video adopts the technology of amplitude modulation, audio frequency modulation RXB11, FSK data signal modulation and so on, and integrates dozens of monitoring images, audio, control and alarm signals into "one" coaxial cable for two-way transmission. Its advantages are: make full use of the resources of coaxial cable space, thirty channels of audio and video and control signals in the same cable two-way transmission, to achieve "one-line"; The construction is simple, the maintenance is convenient, saves the material cost and the construction cost greatly; Frequency division multiplexing technology to solve the remote transmission points scattered, wiring difficult monitoring transmission problems; RF transmission mode only attenuates the carrier signal, the image signal attenuation is relatively small, brightness, chromaticity transmission synchronization nested, to ensure that the image quality reaches about level 4; By using 75Ω coaxial non-equilibrium transmission mode, it has strong anti-interference ability, and the image quality can still be guaranteed in complex electromagnetic environment. The disadvantage is: the use of weak signal transmission, system debugging technical requirements are high, must use professional instruments, if the main line has a device problem, may lead to the whole system no image, in addition to the broadband modulation end need to add AC220V AC power supply, but most of the monitoring points have AC220V AC power supply this condition.

Wireless SmartAIR transmission

SmartAir technology is the only single antenna mode gigabit wireless high-speed transmission technology in the communications industry. It adopts multi-band OFDM port technology, TDMA low delay scheduling technology, as well as low density parity code LDPC, adaptive modulation coding AMC and hybrid automatic retransmission HARQ and other advanced wireless communication RXB11 technologies, to achieve a transmission rate of 1Gbps.