Results 261 to 270 of about 528,139 (301)
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IEEE Microwave Magazine, 2012
Demand for efficient operation of radio frequency (RF) devices with limited resources, such as energy and frequency spectrum, is increasing as a variety of wireless applications quickly become more popular. Cognitive radio (CR), which can sense a radio environment and use an unoccupied spectrum, is thought to be a drastic solution for problems such as ...
Masaki Kitsunezuka +2 more
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Demand for efficient operation of radio frequency (RF) devices with limited resources, such as energy and frequency spectrum, is increasing as a variety of wireless applications quickly become more popular. Cognitive radio (CR), which can sense a radio environment and use an unoccupied spectrum, is thought to be a drastic solution for problems such as ...
Masaki Kitsunezuka +2 more
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Efficient computation of the spectrum of viscoelastic flows
Journal of Computational Physics, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Juliana Vianna Valério +2 more
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Spectrum efficiency of spread spectrum systems
IEEE 1988 International Symposium on Electromagnetic Compatibility, 2003The capabilities of direct-sequence pseudo-noise (DSPN) systems are compared with those of both conventional and trunked LMR systems. It is shown that not only do DSPN systems provide the same advantages over conventional systems as trunking systems, but also they provide many additional features as well without loss of spectrum conservation. >
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An energy-efficient cooperative spectrum sensing
2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2015In this work, the energy consumption in the cooperative spectrum sensing is analysed. The analysis also covers the detection quality assessment and the definition of the energy efficiency (EE) metric. It is shown how cooperation among the sensing nodes affects the EE and how relaying of sensing information and node selection influences the detection ...
Krzysztof Cichon, Hanna Bogucka
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Efficient Skin Spectrum Coding Method
2019 IEEE EMBS International Conference on Biomedical & Health Informatics (BHI), 2019We present an efficient lossless coding method for skin spectral data. In contrast to the conventional prefix-based coding methods, the proposed algorithm utilizes the unique property of the spectral data which changes monotonically with wavelength. The compression ratio of the proposed method alone is similar to those of the previous ones in average ...
Soyoung Lee, Karam Choi, Sung-Hyun Nam
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Efficient coloring of a large spectrum of graphs
Proceedings of the 35th annual conference on Design automation conference - DAC '98, 1998We have developed a new algorithm and software for graph coloring by systematically combining several algorithm and software development ideas that had crucial impact an the algorithm's performance. The algorithm explores the divide-and-conquer paradigm, global search for constrained independent sets using a computationally inexpensive objective ...
Darko Kirovski, Miodrag Potkonjak
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Design and Spectrum Efficiency of a New Waveform
2012With the rapid deployment of new wireless devices and applications in cellular systems and wireless local area networks (WLAN), there is a growing demand for wireless radio spectrum in last several decades. Spectrum efficiency attracts more and more attention.
Lei Xu 0007 +3 more
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A High Spectrum Efficiency Transmission Scheme
2009 International Conference on Scalable Computing and Communications; Eighth International Conference on Embedded Computing, 2009In order to improve the transmission performance in inter-symbol interference channel, a controlled inter-symbol overlapping transmission scheme to obtain high frequency efficiency, which is called inter-symbol overlapping transmission (ISOT), is studied. ISOT allows $K$ symbols to be simultaneously transmitted without increasing channel bandwidth, and
Menghui Yang +4 more
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Spectrum Efficiency of Nested Sparse Sampling
2012This paper addresses the spectrum efficiency study of nested sparse sampling in the estimation of power spectral density for QPSK signal. The authors proposed nested sampling only showed that this new sub-Nyquist sampling algorithm could achieve enhanced degrees of freedom, but did not consider its spectrum efficiency performance.
Junjie Chen 0002 +3 more
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