FM-CDR modification of Frequency Modulation Multiplexer

摘要

Since the standard of FM-CDR has been issued in 2013, radio and television stations across the country are actively using this specification for trial broadcast. In this context, we must implement remold for existing Frequency Modulation Multiplexer of Wireless transmission system. This paper introduces the primary technological standards. Compared with analog frequency modulation multiplexer, we analyze system structure and technical feature and design several conventional schemes of Frequency Modulation Multiplexer's remold. We also pose some nonnegligible problems during the process of remolding and project implementation. At present, the solution methods of this paper have been applied to CDR remold in many provincial and municipal stations and gained a good effect.