| China Mobile Multimedia Broadcasting(CMMB) is the development of new technology in recent years, already several provinces and cities in China had launched related TV business.CMMB is very suitable for small screen mobile reception, is not affected by access to the number of users at the same time, the video is fluent, the good user experience and save the network traffic. Research CMMB is the forefront of current field in digital television technology direction.The paper research the system such as engineering equipment, configuration list and the practical application of technology.The main work of this paper include the following aspects:1.This paper designs the signal flow of the CMMB system, include the signal generating,transmission, encryption, receiving, monitoring of the system.2. This paper analysis and research the program play-out system.The system receives satellite programs and local programs,then transmit to the transmission and distribution network.3.This paper has a detailed study of the business operation support system.This system is composed of the business processing system, authorization command control system, billing system and service access system. It mainly support CMMB system operation work.3.In this paper,it monitor and measure the CMMB signal through the measuring device,such as the device of CMMB signal source, CMMB integrated road tester, spectrum analyzer, CMMB stream analyzer etc. to monitor on the front end device, wireless device, terminal device. |
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