Patent ID: 7382751
Filing Date: 2008-06-03
Classification: H04B

Abstract:
1. A code division multiple access (CDMA) system having a separate channel card architecture, comprising: a back-haul interface module connected to a controller of a cable network controlling station for bi-directional base-band digital signal transmission; a main channel card for receiving the base-band signals from the back-haul interface module and converting the base-band signals into middle frequency signals; a middle frequency module for receiving the middle frequency signals from the main channel card and outputting the middle frequency signal to a radio frequency module, or receiving middle frequency signals from the radio frequency module; a reception channel card for receiving middle frequency signals from the middle frequency module, converting the middle frequency signals into base-band signals and outputting the base-band signals to the back-haul interface module; a random access card for receiving middle frequency signals from the middle frequency module so that a user's electronic network can be found when the user's mobile telephone is switched on; a clock module for generating a timing signal to the reception channel card and the random access card; and a cell controller for outputting control signals to the reception channel card and the clock module or inputting control signals from the reception channel card and the clock module to control the operations of the base station.