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Point-Of-Contact, Dna-Based Amplifier For Detecting Cancer-Related Micro-Rna In Blood Serum, Elton Graugnard, Amber Cox, Jeunghoon Lee, Cheryl Jorcyk, Bernard Yurke, William L. Hughes Apr 2010

Point-Of-Contact, Dna-Based Amplifier For Detecting Cancer-Related Micro-Rna In Blood Serum, Elton Graugnard, Amber Cox, Jeunghoon Lee, Cheryl Jorcyk, Bernard Yurke, William L. Hughes

Elton Graugnard

No abstract provided.


Optimized Stochastic Resonance Method For Signal Detection And Image Processing, Hao Chen, P. K. Varshney, J. H. Michels Feb 2010

Optimized Stochastic Resonance Method For Signal Detection And Image Processing, Hao Chen, P. K. Varshney, J. H. Michels

Hao Chen

Apparatus and method for improving the detection of signals obscured by noise using stochastic resonance noise. The method determines the stochastic resonance noise probability density function in non-linear processing applications that is added to the observed data for optimal detection with no increase in probability of false alarm. The present invention has radar, sonar, signal processing (audio, image and video), communications, geophysical, environmental, and biomedical applications.


Estimation, Training, And Effect Of Timing Offsets In Distributed Cooperative Networks, Hani Mehrpouyan, Steven D. Blostein Jan 2010

Estimation, Training, And Effect Of Timing Offsets In Distributed Cooperative Networks, Hani Mehrpouyan, Steven D. Blostein

Hani Mehrpouyan

Successful collaboration in cooperative networks requires accurate estimation of multiple timing offsets. When combined with signal processing algorithms, the estimated timing offsets can be applied to mitigate the resulting inter-symbol interference (ISI). This paper seeks to address timing synchronization in distributed multi-relay amplify-and-forward (AF) and decode-andforward (DF) relaying networks, where timing offset estimation using a training sequence is analyzed. First, training sequence design guidelines are presented that are shown to result in improved estimation performance. Next, two iterative estimators are derived that can determine multiple timing offsets at the destination. The proposed estimators have a considerably lower computational complexity while …


Bounds On Timing Jitter Estimation In Cooperative Networks, Hani Mehrpouyan, Steven Blostein Jan 2010

Bounds On Timing Jitter Estimation In Cooperative Networks, Hani Mehrpouyan, Steven Blostein

Hani Mehrpouyan

Successful collaboration and resource sharing in cooperative networks require accurate estimation of multiple timing jitters. When combined with signal processing algorithms the estimated timing jitters can be applied to mitigate the resulting inter-symbol interference (ISI) and improve performance. In this paper we seek to derive the Cramer-Rao lower bounds (CRLB) for timing jitter estimation in distributed cooperative networks. In addition to being a benchmark for judging the performance of timing jitter estimators, the CRLBs can be applied to determine the effect of the choices of training sequence and cooperative protocol on timing jitter estimation.


Synchronization In Cooperative Networks: Estimation Of Multiple Carrier Frequency Offsets, Hani Mehrpouyan, Steven Blostein Jan 2010

Synchronization In Cooperative Networks: Estimation Of Multiple Carrier Frequency Offsets, Hani Mehrpouyan, Steven Blostein

Hani Mehrpouyan

The distributed nature of cooperative networks may result in multiple carrier frequency offsets (CFOs), which make the channel time-varying and overshadow the performance gainspromised by collaborative communications. However, much of the analysis in the area of cooperative communications assumes perfect synchronization. This paper seeks to address frequency synchronization in cooperative communication systems, where CFO estimation using a training sequence is analyzed. The Cramer-Rao lower bound (CRLB) for various cooperative protocols is derived. In the next step, we propose two computationally efficient iterative estimators based on the MUltiple SIgnal Characterization (MUSIC) algorithm, that can estimate the CFOs from all the relays …