Chidanand Apté, Fred Damerau, et al.
ACM Transactions on Information Systems (TOIS)
Next generation cognitive radio networks require an RF and mixed signal hardware architecture that can achieve low-energy, very wideband spectrum sensing. We survey state-of-the-art low-power CMOS building blocks as potential candidates for realizing such an architecture. For the critical analog-to-digital converter, we compare time-interleaved and frequency-interleaved architectures, including system-level simulations, and frequency-interleaving is shown to provide significant advantages. Measurement results from a 3.8 mW 5 GHz bandwidth analog domain frequency interleaver are presented to confirm the possibility of a very low-energy frequency domain digitizer. Coupled with DSP for calibration and signal feature extraction, this architecture has significant promise for cognitive spectrum sensing. Copyright © 2014 IEEE.
Chidanand Apté, Fred Damerau, et al.
ACM Transactions on Information Systems (TOIS)
Apostol Natsev, Alexander Haubold, et al.
MMSP 2007
Charles H. Bennett, Aram W. Harrow, et al.
IEEE Trans. Inf. Theory
Michael C. McCord, Violetta Cavalli-Sforza
ACL 2007