A DIGITAL RAD1 AND SOURCE OCESSOR FOR CHANNEL DEMODULATION DING OF SATELLITE RADIO PROGRAMS
F.-O. Witte, R. Backes, M. Klumpp, W. Sinnhofer, S. Arendt · 1996
New satellite based digital radio standards have been developed recently. The advantages of these standards (CD-like sound quaky, small bandwidth requirements, embedded digital data services) require considerable larger modulation and demodulation eforts because forward error correction and sophisiticated data compression techniques are used. A commercial success of these radio systems is closely related to the availablity of low cost receiver equipment. This paper describes the concept and the architecture of a chipset that is designed for the demodulation of digital radio signals according to the european ALII?') standard. The chipset consists of the MSP2) -chip which is already widely used in standard satellite receivers or Tv sets and the newly developed Digital Radio Processor (DRP) as a coprocessor for ADR decoding. The presented chipset allows a very cost-ef fective upgrade of standard satellite receivers for digital broadcast reception because substantial parts of the analog TV-sound processing are used for ADR-demodulation as well. Both IC's of the chipset are based on DSP-cores that provides a highjexibilty with respect to modijkations and additional Jeatures.