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chirp

Proceedings of the 17th ACM SIGKDD international conference on Knowledge discovery and data mining, 2011
We introduce a classifier based on the L-infinity norm. This classifier, called CHIRP, is an iterative sequence of three stages (projecting, binning, and covering) that are designed to deal with the curse of dimensionality, computational complexity, and nonlinear separability.
Leland Wilkinson   +2 more
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Chirp, Self-Chirp and Meta-Chirp in Sampled Fibre Gratings

Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamentals and Applications, 1995
Sampled Bragg gratings consist of a periodic modulation of the amplitude and/or the phase of the Bragg grating. In the frequency domain, their reflectivity spectrum shows a number of equally spaced peaks, covering a range of wavelengths determined by the Fourier contents of the modulation, or "sampling" function.
François Ouellette   +3 more
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Robust chirped mirrors

Applied Optics, 2008
Optimized chirped mirrors may perform suboptimally, or completely fail to satisfy specifications, when manufacturing errors are encountered. We present a robust optimization method for designing these dispersion-compensating mirror systems that are used in ultrashort pulse lasers. Possible implementation errors in layer thickness are taken into account
Omid, Nohadani   +3 more
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Chirping

2023
AbstractHere Dickens elects an agent of change associated with domesticity. The Cricket’s task is to heal a broken marriage between a middle-aged carrier of parcels, John Peerybingle, and his young bride Dot. This appears to be another version of unfortunate January-May marriages, set in late January when the carrier married a year ago.
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Multiple Linear Chirp-Based Partial-Band Chirp Jamming for Chirp Spread Spectrum Systems

2019 International Conference on Information and Communication Technology Convergence (ICTC), 2019
The conventional noise-based jamming strategy that randomly radiates high power radio frequency signals limits the jamming performance when the bandwidth is spread more widely. Moreover, increasing the jamming bandwidth to deteriorate entire spreading bandwidth reduces the jamming bandwidth efficiency.
Kwang-Yul Kim   +3 more
openaire   +1 more source

Optical orthogonal chirp division multiplexing with chirp index modulation

Optics Letters
We propose and experimentally demonstrate a modulation technique, termed orthogonal chirp division multiplexing with chirp index modulation (OCDM-CIM), where partial chirps are deliberately unmodulated to reduce interference and energy consumption. OCDM-CIM exhibits the combined advantages of interference rejection from the chirp-spread spectrum in ...
Kunping Luo   +5 more
openaire   +2 more sources

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