| 摘要 |
PURPOSE: A digital unit of a mobile communication base station is provided to mount a channel card for an HDR(High Data Rate) on the digital unit, and to transmit a voice and data, thereby simultaneously giving a maximum data service to an existing voice. CONSTITUTION: A demodulator(310) demodulates data outputted from an IF RX card(300). A turbo decoder(320) is connected to the demodulator(310) by a bus, and decodes the data. The first controller(340) connected to the demodulator(310) transmits the data to a trunk card(330). A CPLD(Complex Programmable Logic Device) is applied with a clock outputted from a clock driver(350), and supplies the data to the demodulator(310). The second controller(380) controls data outputted from a trunk card(370). A modulator(400) modulates the data according to a control signal outputted from the second controller(380), and transmits the modulated signal to an IF TX card(390). |
