Structure of Speed Conversion / Modem Matching Device for Wireless Data Communication Interworking System in Code Division Multiple Access Mobile Communication System

摘要

The present invention relates to a structure of a speed conversion / modem matching device of a wireless data communication interworking device in a code division multiple access (CDMA) mobile communication system.;The wireless data communication interworking device is a device connected to a mobile switch to perform wireless data communication such as fax communication and PC communication between a mobile subscriber and a subscriber connected to a public communication network in a CDMA mobile communication network. Among the components of the wireless data communication interworking device, the speed conversion / modem matching device extracts and receives digital traffic packet data from the mobile communication network, transmits the data to the public communication network through a modem set, and transmits the traffic data transmitted through the modem of the public communication network. After receiving as a modem set to transmit a digital traffic packet in the form of a mobile communication network.;The present invention has a modem matching function, a preamble detection and cancellation function, an analog-to-digital conversion function using a pulse code modulation (PCM) codec, and a VME bus matching function to operate independently of the control station structure to improve communication efficiency. A structure of a speed conversion / modem matching device of a wireless data communication interworking system in a code division multiple access mobile communication system is presented.