Spectrum and frequency
Utilization Methods of Frequency Spectrum and It’s Dynamic Allocation
... efficient spectrum utilization challenge and to address this challenge the Cognitive radio came into ...opportunistic spectrum usage approach [2], where in the frequency bands that are not used by ...
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Optimization of Frequency Spectrum through Beam Replication
... the spectrum consumption and improve the performance of the ...The frequency reuse and cell splitting methods, & cell pattern (5) are used to increases the spectrum ...the frequency is ...
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Enhanced compressive wideband frequency spectrum sensing for dynamic spectrum access
... where r EVLBS k , r VLBS k , and r BPDN k represent values of esti- mated frequency spectrum vectors in the kth subband via EVLBS-CWSS, VLBS-CWSS, and BPDN-CWSS, respec- tively. These performance functions ...
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Directional Selection and the Site-Frequency Spectrum
... the frequency q of the the number of individuals in the sample that carry the mutation in the population, the probability of sampling derived form of the ...site-frequency spectrum as the ally ...
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The Site Frequency Spectrum for General Coalescents
... ABSTRACT General genealogical processes such as L- and J-coalescents, which respectively model multiple and simultaneous mergers, have important applications in studying marine species, strong positive selection, ...
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FREQUENCY DISSEMINATED SCHEDULER FOR DIGITAL SPECTRUM NETWORKS
... duplex(TDD)Orthogonal frequency-division multiple access (OFDMA) technology operating on dedicated licensed spectrum and is distinguished by its high discovery ...orthogonal frequency division ...
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Geometry of the Sample Frequency Spectrum and the Perils of Demographic Inference
... sample frequency spectrum (SFS), which describes the distribution of mutant alleles in a sample of DNA sequences, is a widely used summary statistic in population ...
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Performance Improvement of Wireless Communications Using Frequency Hopping Spread Spectrum
... spread spectrum is a transmission technology used in wireless networks and a technique to generate spread spectrum by hopping the carrier fre- quency FHSS uses narrow band signal which is less than 1 MHz, ...
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Learning Natural Selection from the Site Frequency Spectrum
... ABSTRACT Genetic adaptation to external stimuli occurs through the combined action of mutation and selection. A central problem in genetics is to identify loci responsive to specific selective constraints. Many tests have ...
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<p>Impact of smoking on frequency and spectrum of <em>K-RAS</em> and <em>EGFR </em>mutations in treatment naive Indonesian lung cancer patients</p>
... In addition, we speculate that the extensive use of woods as solid fuels for cooking that are prevalent among up to 50% of the Indonesian population 41 may affect the rate of K-RAS mutation as described in a Mexican ...
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The hitchhiking effect on the site frequency spectrum of DNA polymorphisms.
... The results presented here demonstrate that under the simple hitchhiking model (1) the expected value of Tajima’s D is large and negative (indicating a skew toward rare var[r] ...
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A Study on PAPR Reduction on Spectrum and Energy Efficiencies in Orthogonal Frequency Division Multiplexing with PTS Technique
... Orthogonal Frequency Division Multiplexing (OFDM) possesses several desirable attributes, such as immunity to the symbol interference, robustness with respect to multi-path fading, and ability for high data ...
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Spectrum Analysis in FM Band Using Cognitive Radio Testbench
... A spectrum is nothing but a collection of various types of electromagnetic radiations of different ...etc.Radio frequency is a natural resource but it has limitations as it gets depleted when used, but ...
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The Effects of Seismic Spectrum on Seismic Analysis
... seismic spectrum of the two buildings, it can be seen that though the peak of the seismic spectrum of building W1 is larger than that of the seismic spectrum of building W2, the area where the peaks ...
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ece300 lab05 fourier coef
... 1. Use the function generator to generate a sinusoid of frequency 100 kHz and (open circuit) amplitude 0.1 V (waveform a). Use the oscilloscope to verify the amplitude**. Now observe the signal power ...
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Analysis of scanned channel estimation in 2.4 GHz ISM Band
... enables spectrum sensing to determine white space on ISM band of capacity ...active spectrum access using agile frequency ...established spectrum holes possible during transmission so as to ...
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The Application of PXI VSA in Radar Testing System
... specific frequency within a specified bandwidth and is suitable for performing spectrum measurements, demodulation, and signal ...high-performance spectrum analyzer platform, the use of its powerful ...
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Estimation of Time-Scaling Factor for Ultrasound Medical Images Using the Hilbert Transform
... A signal spectrum is plotted with the Gaussian spectrum used for simulation, see Figure 6(a). They were voluntarily chosen similar in bandwidth and central frequency. Signals were artificially ...
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DEVELOPMENT OF A DIGITALLY TUNED QUADRATURE OSCILLATOR
... the frequency of oscillations digitally having good linearity with digital control ...the frequency of oscillations for oscillator circuit can be achieved which is controlled by a digital control word ...
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Diagnosis of Impeller Faults in a Centrifugal Pump Using Vibration Signals
... vibration spectrum in a low frequency under three typical flow rates: above the BEP flow BEP flow and below BEP flow for the baseline and the defect on five ...vibration spectrum exhibit clear ...
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