Development Of Wireless Video Acquisition And Transmission System Based On WCDMA

The current video transmission system which is represented by the television network supervisory control system is limited by some disadvantages, such as complexity of building in complicated geography environment. To achieve a perfect solution of the above problem, the wireless video acquisition and transmission system based on WCDMA are designed. And the wideband CDMA (WCDMA) has been widely accepted as one of the air interfaces of the third generation (3G) mobile system.The architecture of the video acquisition and transmission system after analyzing the current requirement for video transmission is investigated. And therefore, the MPEG-4 technology, complicated programmable logic device (CPLD) technology and the WCDMA mobile terminal technology are applied to achieve the required performance. And the application and developing of the system are introduced in detail. First, the development of the video transmission system and the application are described. And then the system composition are proposed, then several technology employed in the designing are introduced. After that, the hardware of the video acquisition part and the WCDMA-based transmission part whose Printed Circuit Board (PCB) is presented at the end are designed and developed. And corresponding, the software which includes the CPLD software, the Microcontroller software, the WCDMA terminal software stack, and the monitor software run on the remote monitor are designed. At last, the disadvantages and merging problems in system developing are described. And therefore, the reasonable solutions are proposed.Compared with the cable video transmission system, the wireless one is more flexible and mobile. With the development of 3G mobile communication in china, the wireless video acquisition and WCDMA-Based transmission system can be an effective solution to provide video service in surveillance applications.