Detailed explanation of three transmission methods--wireless video module

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Detailed explanation of three transmission methods--wireless video module [Copy link]

The wireless video module is mainly composed of a transmitter, a receiver and a controller. The wireless video module is a module that uses wireless technology for wireless transmission. It is widely used in wireless communications, video surveillance and other fields. The following is a detailed explanation of the three transmission methods of the wireless video module: 1. Wireless SmartAir transmission SmartAir technology is the only single-antenna mode gigabit wireless high-speed transmission technology in the current communications industry. It uses multi-band OFDM air interface technology, TDMA low-latency scheduling technology, and advanced wireless communication technologies such as low-density parity check code LDPC, adaptive modulation coding AMC and hybrid automatic retransmission HARQ to achieve a transmission rate of 1Gbps. 2. Twisted pair transmission It is also a kind of video baseband transmission, which converts the unbalanced mode of 75Ω into balanced mode for transmission. It is a better solution for the transmission of monitoring images within 1Km, where the electromagnetic environment is relatively complex and the occasion is relatively good. The monitoring image signal is processed and transmitted in a balanced and symmetrical manner. Its advantages are: simple wiring, low cost, and strong anti-common mode interference performance. Its disadvantages are: it can only solve the transmission of monitoring images within 1Km, and one twisted pair can only transmit one image, which is not suitable for large and medium-sized monitoring; the twisted pair is fragile and has poor anti-aging ability, so it is not suitable for field transmission; the high-frequency component of the twisted pair transmission is greatly attenuated, and the image color will be greatly lost. 3. Video baseband transmission It is the most traditional TV monitoring transmission method. It does not process the 0-6MHz video baseband signal and directly transmits the analog signal through the coaxial cable (unbalanced). Its advantages are: small loss of image signal in short-distance transmission, low cost, and stable system. Disadvantages: short transmission distance, large attenuation of high-frequency components above 300 meters, and the image quality cannot be guaranteed; one cable is required for one video signal, and another cable is required for the transmission of control signals; its structure is a star structure, with large wiring volume, difficult maintenance, and poor scalability, which is suitable for small systems.

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Which method is it to transfer videos using wifi?

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Lazy Cat Loves Flying posted on 2018-8-30 15:47 Which method is it to transfer videos using wifi?

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