Patent ID: 7466778
Filing Date: 2008-12-16
Classification: H04L

Abstract:
1. A frequency domain diversity DVB receiver device comprising: a. a first antenna port and a second antenna port for receiving radio signals; b. a radio signal processing circuit connected to said first antenna port, and a second radio frequency signal processing circuit connected to said second antenna port, each radio signal processing circuit converting the radio signals to digital samples; c. a first switch which alternately selects the digital samples of the first and the second radio signal processing circuits; d. a front-end processor which processes the digital samples selected by said first switch to provide time-domain symbols; e. a second switch synchronized with said first switch and connected to receive the output time-domain symbols of said front-end processor; f. a first time-domain symbol buffer and a second time-domain symbol buffer receiving from said second switch to receive time-domain symbols corresponding to digital samples received from the first and second radio signal processing circuits, respectively; g. a third switch which alternately receives time-domain symbols from said first and second time-domain symbol buffers; h. a fast fourier transform circuit receiving the time-domain symbols from the said third switch and converting the time-domain symbols into frequency domain symbols; i. a fourth switch synchronized with said third switch to receive the frequency domain symbols from the fast-fourier transform circuit; j. a first frequency domain symbol buffer and a second frequency domain symbol buffer connected to said fourth switch to receive frequency domain symbols corresponding to time-domain symbols output from the first and second time-domain symbol buffers, respectively; and k. a diversity processor which combines the frequency domain symbols from said first and second frequency-domain symbol buffers.