Design of software defined down-conversion and up-conversion: an overview
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AbstractIn recent years, much attention has been paid to software-defined radio (SDR) technologies for multimode wireless systems. SDR can be defined as a radio communication system that uses software to modulate and demodulate radio signals. This article describes concepts, theory, and design principles for SDR down-conversion and up-conversion. Design issues in SDR down-conversion are discussed, and two different architectures, super-heterodyne and direct-conversion, are proposed. Design issues in SDR up-conversion are also discussed, and trade-offs in the design of filters, mixers, NCO, DAC, and signal processing are highlighted.
CitationZhang,Y., Huang,L.-K., Maple,C. and Xuan, Q. (2011) 'Design of Software-Defined Down-Conversion and Up-Conversion: An Overview', ZTE Communications 9(4):10-14,
PublisherZTE corporation, China
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