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Aaron Wagner, professor of electrical and computer engineering at Cornell, has been thinking about the fundamental assumptions surrounding the use of feedback information in digital communication stra...
A unified framework is given for multiple user information networks. These networks consist of several users communicating to one another in the preaence of arbitrary inteflerence and noise. The prese...
Decision noise:An explanation for observed violations of signal detection theory
Decision noise observed violations signal detection theory
2015/7/28
In signal detection theory (SDT), responses are governed by perceptual noise and a flexible decision criterion. Recent criticisms of SDT (see, eg, Balakrishnan, 1999) have identified violations of its...
NETWORK STRUCTURE AND THE AGGREGATION OF INFORMATION: THEORY AND EVIDENCE FROM INDONESIA
Networks Diff usion of information Targeting Development
2015/7/15
We use unique data from 600 Indonesian communities on what individuals know about
the poverty status of others to study how network structure influences information aggregation.
We develop a m...
Towards a Mathematical Theory of Super-Resolution
Diffraction limit deconvolution stable signal recovery sparsity sparse spike trains, `1 minimization dual certificates interpolation super-resolution semidefinite programming
2015/6/17
This paper develops a mathematical theory of super-resolution. Broadly speaking, superresolution is the problem of recovering the fine details of an object—the high end of its spectrum— from coarse sc...
Phase Retrieval via Wirtinger Flow:Theory and Algorithms
Phase Retrieval Wirtinger Flow Theory Algorithms
2015/6/17
We study the problem of recovering the phase from magnitude measurements; specifically, we wish to reconstruct a complex-valued signal x ∈ Cn about which we have phaseless samples of the form yr = ∣&#...
For close to two decades, Cornell scientists have developed processes for using polymers to self-assemble inorganic nanoparticles into porous structures that could revolutionize electronics, energy an...
Complex Analysis of the Lossy-Transmission Line Theory: A Generalized Smith Chart
Complex analysis losses low-loss approximation
2009/7/28
It has been very usual in the specialized literature to skip the detailed study of the lossy transmission line theory by reducing it to the low-loss approximation. Although this is valid in the most c...