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Low-authority controller design via convex optimization
Controller design system characteristic values of perturbation theory design sparse actuators and sensors
2015/8/11
In this paper we address the problem of low-authority controller (LAC) design. The premise is that the actuators have limited authority, and hence cannot significantly shift the eigenvalues of the sys...
Optimization-based tuning of low bandwidth control in spatially distributed systems
Low bandwidth controller controller filter control signal robust
2015/8/11
We describe a new method for tuning a certain family of low-bandwidth controllers for linear time-invariant and spatially-invariant (LTSI) plants. We consider LTSI controllers with a fixed structure, ...
High-order accurate simulation of low-Mach laminarow past two side-by-side cylinders with Spectral Dfference method
low-Mach laminarow simulation
2015/6/23
This report presents development of a two-dimensional solver for compressible viscous
ow using Spectral Dierence (SD) method and its applications on simulating laminar
ow past two cylinders. The ...
Square Root Law for Communication with Low Probability of Detection on AWGN Channels
Square Root Law Communication Low Probability Detection AWGN Channels
2012/3/1
We present a square root limit on low probability of detection (LPD) communication over additive white Gaussian noise (AWGN) channels. Specifically, if a warden has an AWGN channel to the transmitter ...
The mutual information of bit-interleaved coded modulation (BICM) systems, sometimes called the BICM capacity, is investigated at low signal-to-noise ratio (SNR), i.e., in the wideband regime. A new l...
Threshold Improvement of Low-Density Lattice Codes via Spatial Coupling
Low-Density Lattice Codes Spatial Coupling Information Theory
2011/9/20
Abstract: Spatially-coupled low-density lattice codes (LDLC) are constructed using protographs. Using Monte Carlo density evolution using single-Gaussian messages, we observe that the threshold of the...