2.4g-based broadband wireless multi-point video transmission method and system

Abstract

The invention discloses a transmission method and a system for a broadband wireless multi-point audio based on 2.4G. The transmission method and the system for the broadband wireless multi-point audio based on 2.4G comprise one to six sending terminals and one to six receiving terminals. Each of the sending terminals and each of the receiving terminals are in intercommunication through a 2.4G frequency channel. After collected audio analog baseband data are A / D converted by each sending terminal, one-way audio digital baseband data with highest rate below 4M bit / second are converted into two-way audio digital baseband data with highest rate below 2M bit / second by each sending terminal, and the audio digital baseband data with rate below 2M bit / second are sent to each receiving terminal by corresponding antennas. Two-way audio digital baseband data of each sending terminal are combined into one-way audio digital baseband data so as to be D / A converted into audio analog baseband data by each receiving terminal and sent to a computer receiving system through a universal serial bus (USB) interface. According to the transmission method and the system for the broadband wireless multi-point audio based on 2.4G, the low-power-consumption, long-distance, wireless and high definition baseband multi-point transmission is achieved. The transmission method and the system for the broadband wireless multi-point audio based on 2.4G has the advantages of being low in power consumption, long in distance, multi-point transmitting and the like.

Description

technical field [0001] The present invention relates to transmission technology in wireless communication, more specifically, relates to a low power consumption long-distance broadband wireless high-definition multi-point video transmission method and system based on 2.4G. Background technique [0002] In order to realize the control of industrialization, home automation and building automation, liberate people from wired communication, and aim to replace wired communication, short-distance wireless communication technology standards suitable for personal wireless area networks have been developed rapidly. When people enjoy convenience and speed, the electromagnetic compatibility of these technologies becomes increasingly obvious. Among several wireless methods, infrared wireless is the first to appear, but infrared wireless has a short effective receiving distance, cannot support multi-directional transmission, consumes a lot of power, and has poor anti-interference ability...

AI Technical Summary

Problems solved by technology

Among several wireless methods, infrared wireless is the first to appear, but the effective receiving distance of infrared wireless is short, and it cannot support multi-directional transmission, the power consumption is large, and the anti-interference ability is poor.

Next came the 27MHz radio frequency. The disadvantage is that the receiving distance is short, the transmission rate is low, and the anti-interference ability is average.

On the basis of 27MHz radio frequency wireless, FM wireless has been developed, which is also cheaper, has a longer transmission distance, can receive signals in all directions, has high anti-interference ability, and only supports one-way signal transmission

Bluetooth technology has absolute advantages in terms of transmission distance and speed, but the high requirements for microprocessors and protocol licenses keep the price of the whole set of products high, which is still unaffordable for most domestic consumers. It also consumes more power

To sum up, existing wireless systems have problems such as high power consumption, short transmission distance, low definition, and single-point transmission.

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