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Time Domain Characterization and Test of High Speed Signals Using Incoherent Sub-sampling

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3 Author(s)
Debesh Bhatta ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol. Atlanta, Atlanta, GA, USA ; Joshua W. Wells ; Abhijit Chatterjee

High speed signal acquisition and characterization contributes a significant amount to the total test cost of the finished product in modern high speed systems. Incoherent under-sampling allows robust and low cost signal acquisition without requiring a prior accurate knowledge of signal period. In this paper we propose a frequency estimation and signal reconstruction technique for incoherently sub-sampled periodic waveforms that is based on a time domain cost function. The method reduces the per iteration cost by a factor of log N compared to frequency domain cost functions. The proposed method estimates the period of a test signal with much fewer samples without degradation of accuracy.

Published in:

2011 Asian Test Symposium

Date of Conference:

20-23 Nov. 2011