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Nonuniformly Controlled Analog-to-Digital Converter for SDR Multistandard Radio Receiver

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5 Author(s)
Ben-Romdhane, M. ; CIRTA''COM Res. Lab., Univ. of Carthage, Ariana, Tunisia ; Rebai, C. ; Ghazel, A. ; Desgreys, P.
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A new multistandard radio receiver architecture is presented to take advantage of nonuniformly controlled analog-to-digital converters (ADCs). By defining the statistical parameter related to the random sampling frequency, a time-quantized random sampling scheme is considered to design a nonuniform sampling-based software defined radio (SDR) multistandard receiver. A relaxed design is proposed for an E-GSM/UMTS/IEEE802.11a multistandard receiver. The designed baseband stage avoids the use of the automatic gain control block, relaxes the nonprogrammable antialiasing filter to the third order, and converts data with a 16-bit ADC at a 124-MHz mean sampling frequency.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:58 ,  Issue: 12 )