Concept of a multistandard receiver for digital broadcast and communication services

摘要

The article describes several aspects of realisation of a so called multistandard receiver, i.e. a device, which combines receiving facilities for several digital (DAB, DMB, DVB) and, at least for a transitional period, analogue broadcasting services (FM, PAL/SECAM). Possible structures and realisation aspects are considered. Furthermore, the connection to an ISDN or GSM network and to an indoor communication system is discussed. The systems to be integrated in the receiver are characterised by their main parameters and modes. From that, requirements to the architecture of the multistandard receiver are derived. The A/D conversion, signal identification and synchronisation, channel estimation and correction, channel decoding, program and service selection and frame demultiplexing are discussed in more detail. Furthermore, basic differences of multistandard receivers for mobile, portable and stationary receiving conditions concerning the services to be implemented and the receiver architecture are considered. Further discussions on the use of such a receiver as an office or entertainment device are presented and the requirements resulting from that are derived.