Results 221 to 230 of about 22,763 (260)
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Packet detector for multiband UWB
2008 3rd International Symposium on Wireless Pervasive Computing, 2008This paper evaluates techniques for packet detection and coarse synchronization, under various channel conditions. Particular emphasis is given on the impact of data word length, and minimal complexity solutions are derived. A strategy for selecting appropriate factors that guarantee acceptable performance under particularly harsh transmission ...
D. Pettas, Vassilis Paliouras
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Broadband/Multiband Printed Antennas
IEICE Transactions on Communications, 2005Broadening the frequency bandwidth of antennas has been one of the major subjects concerning antenna design technologies. Two of the major subjects for microstrip antennas, which appeared in the 1970s, have also been the broadening of the frequency bandwidth and the sharing of multifrequency bands. In this paper, we describe the broadband and multiband
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Multiband effects in weak localization
Physical Review B, 1985Weak-localization effects, especially the dependence of the resistance on a magnetic field, have become a unique probe for determining characteristic times for conduction electrons in metals. Analysis of the magnetoresistance data is usually made with the theory of Hikami et al., which is derived in the model of free electrons and s-type impurity ...
, Rainer, , Bergmann
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Adaptive Multiband Spectrum Sensing
IEEE Wireless Communications Letters, 2012An adaptive multiband spectrum sensing procedure is developed for fast and reliably locating multiple idle ones among a large number of channels. Through an iterative exploration process to reduce the number of candidate channels, the limited sampling budget can be focused on the more promising locations of the spectrum, resulting in significant ...
Yan Feng, Xiaodong Wang 0001
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Multiband dynamic compressed sensing
2015 IEEE 12th International Symposium on Biomedical Imaging (ISBI), 2015The combination of the PI with CS reconstruction has been an important research topic in MR community due to its potential for further acceleration in MR acquisition. In particular, the application to the 3D volumetric imaging has great potential due to the introduction of additional dimension along slice direction.
Huisu Yoon +5 more
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Multiband and multicarrier operations in HSDPA
2011 8th International Symposium on Wireless Communication Systems, 2011Multicarrier operation offers significant gains by bandwidth extension as well as by its inherent ability to exploit diversity while transmitting on different adjacent carrier frequencies. A natural enhancement of this technique is multiband operation, since at different non-adjacent bands even more diverse radio conditions are to be found. Furthermore,
Jaroslaw Lachowski +2 more
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Sampling expansions for multiband signals
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1985The class B I of finite energy signals bandlimited to a set I is considered where I denotes a finite union of disjoint open intervals (bands) on the real frequency axis. If such a signal is sampled uniformly (constant intersample spacing T), it is shown that the following five propositions are equivalent.
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Multichannel sampling for multiband signals
Signal Processing, 1994zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Design of Multiband Antenna with Staircase Effect in Ground for Multiband Application
2023Sonali Kumari +2 more
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Multiband Fractional Thouless Pumps
Physical Review LettersQuantization of particle transport lies at the heart of topological physics. In Thouless pumps-dimensionally reduced versions of the integer quantum Hall effect-quantization is dictated by the integer winding of single-band Wannier states. Here, we show that repulsive interactions can drive a transition from an integer- to a fractional-quantized ...
Marius Jürgensen +3 more
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