DESCRIPTION
The SDARS is a satellite transmission system based on two geostationary satellites on the East and West coasts of the Continental United States (CONUS). In the urban areas, where the line of sight reception of the satellites is difficult or not possible, the service is covered by terrestrial repeaters adopting a MultiCarrier Modulation scheme. Designed for digital radio receivers compatible with the XMRadio SDARS System, STA400A IF2TA_P IF2TA_N 10 bit ADC Terrestrial Multi Carrier Demodulator FIFO Sat.FIFO IF2TD[9:0] Terr.TDM Synch. and Descrambling Sat/Sat Weighting & Combining Depuncturing Viterbi Decoder ADCSEL Figure 1. Channel Decoder Block Diagram Satellite 1 QPSK Demodulator FIFO Sat1 TDM Synch. and Descrambling Terr./Sat. Combining RS Decoder IF2SD[7:0] TDM Demux FEC FIFO Sat1&2 Weighting Factor Calculation IF2SA_N IF2SA_P 8 bit ADC PCBS1 PCDC1 FIFO PC Bitstream Interface #1 PRC Demux Controller PC Port #1 PCSD1 PCFS1 PCTS_EF1 SREFM SREFP SADCREF SINCM SVCMO Satelli...
STMicroelectronics
