Multi-standard software definable radios (SDR) which are capable of operation according to a variety of different mobile radio standards represent an extremely powerful tool for evolution towards future third-generation cellular systems. An approach based on the use of a fixed-bandwidth analogue front-end for the implementation of a wideband digital SDR receiver was introduced by Karimi and Friedrichs (see, IEE Colloquium on Adaptable and Multi-Standard Mobile Radio Terminals, 1997) and the resulting impact on analogue-to-digital converter technology investigated. This paper examines a number of the architectural issues and trade-offs involved in the design and implementation of the digital signal processing aspects of such wideband receivers in the context of multi-standard GSM/DCS/UMTS digital radios. This work has been undertaken in the context of the FIRST project (Flexible Integrated Radio System Technology) as part of the ACTS mobile domain.
Discussion(0)
No comments yet. Be the first to comment.