R. Yazicigil, Tanbir Haque, M. Kumar, Jeffrey Yuan, John Wright, P. Kinget
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A compressed-sampling time-segmented quadrature analog-to-information converter for wideband rapid detection of up to 6 interferers with adaptive thresholding
A rapid interferer-detector for cognitive radio systems is presented that uses a compressed-sampling time-segmented quadrature analog-to-information converter (TS-QAIC). The TS-QAIC introduces system scalability through adaptive thresholding and time segmentation, while limiting silicon cost and complexity. The TS-QAIC can detect 6 interferers in 2.7-3.7GHz in 10.4μs with 8 physical I/Q branches. The TS-QAIC chip implemented in 65nm CMOS on 0.517mm2 (active area) consumes 81.2mW from 1.2V.
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