Patent ID: 7535952

Claim:
A reception apparatus of a mobile station in a Software Defined Radio (SDR) mobile communication system, comprising: a radio frequency (RF) processor for converting a received RF signal into a digital signal, and outputting data on a per-unit basis according to a predetermined clock; an external memory for storing the output data in a predetermined buffer area; and a digital signal processing unit, for reading stored data in the external memory, storing the read data in an internal memory, and performing digital signal processing on the read data samples as while storing the data in the external memory is completed, wherein the digital signal processing unit comprises: at least one digital signal processor for reading the stored data and demodulating the read data while storing the data in the external memory is completed; the internal memory for storing the demodulated data, and outputting previously-demodulated data stored in the internal memory, upon receiving a data-done signal; and a controller for generating an address corresponding to the stored data and counting the data to be subjected to digital signal processing.