A low-voltage energy-sampling IR-UWB digital baseband employing quadratic correlation
Author(s)Chandrakasan, Anantha P.; Mercier, Patrick Philip; Bhardwaj, Manish; Daly, Denis C.
DownloadMercier-2009-A 0.55V 16Mbs 1.6mW non-coherent IR-UWB digital baseband with 1ns synchronization accuracy.pdf (1.347Mb)
MetadataShow full item record
This paper describes a digital baseband designed for use in a non-coherent IR-UWB system. Owing to the nonlinear statistics introduced by the energy-sampling RF front-end, the baseband employs a new quadratic correlation technique that achieves comparable performance to a matched filter classifier, with the added benefit of being robust to SNR estimation errors. Additionally, “alias-free codes” are introduced that allow for pulse-level synchronization accuracy without requiring any increase in front-end complexity. Fabricated in a 90 nm CMOS process, the digital baseband utilizes significant parallelism in addition to clock and data gating to achieve low-power operation, with supply voltages as low as 0.55 V. At a clock frequency of 32 MHz, the baseband requires 14-to-79 μs to process a preamble during which it consumes an average power of 1.6 mW, while payload demodulation requires 12 pJ/bit.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Microsystems Technology Laboratories
IEEE Journal of Solid-State Circuits
Institute of Electrical and Electronics Engineers
Mercier, P.P. et al. “A Low-Voltage Energy-Sampling IR-UWB Digital Baseband Employing Quadratic Correlation.” Solid-State Circuits, IEEE Journal of 45.6 (2010): 1209-1219. ©2010 IEEE.
Final published version
INSPEC Accession Number: 11359467