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Challenges in software defined radio devt

Posted: 07 Feb 2011 ?? ?Print Version ?Bookmark and Share

Keywords:Software defined radio? SDR?

Software defined radio (SDR) has become a hot topic in the industry and is seen as a solution for many of the development problems for new radio platforms. It is generally perceived that SDR is the answer to the need for flexibility, upgradability, and the problems of implementing multiple radio standards alternatively and even running several services in parallel. An SDR-based platform can also reduce the high development costs of a full new ASIC-based solution.

But what is really meant by software defined radio? It is not only a system on a chip radio receiver with "software inside." This approach is already state of the art. Modern radio receiver chipsets already count on embedded cores, where software implements many parts of the functionality. Even radio receivers for the old fashioned FM radio are implemented digitally as software solutions on embedded cores or standard DSPs. The software may be embedded in a chip or chipset without being visible to the outside world.

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