Patent ID: 6603754
Filing Date: 2003-08-05
Classification: H04B,H04W

Abstract:
A basestation transmission system in a mobile communication system, comprising:a channel card unit for band spread modulating a received voice signal into a baseband signal containing I signal portions and Q signal portions for each of a plurality of sectors, and for transmitting the baseband signal in series; a digital combining unit for combining the I and Q signals portions of the base baseband signal on a channel-by-channel basis for each of said sectors; a digital/analog converting unit for converting the serial baseband signal output from the digital combining unit into a parallel signal, and then converting the parallel signal into an analog signal; and a baseband signal processing unit for processing the analog baseband signal from the digital/analog converting unit, wherein the channel card unit and the digital combining unit are integrated on a printed circuit board and the digital/analog converting unit and the baseband transmission unit are also integrated on a printed circuit board.