Spectrum sensing is one of the main research issues under wireless communication for dynamic spectrum sharing .there are many spectrum sensing algorithm proposed in literature each of them has its own advantages and disadvantages. Among the algorithms emery detector based spectrum sensing is less complex and adapted in wireless standard. The issues in the energy detector is the poor performance...

In this paper we describe our methodologies and evaluation results for the shot boundary detection at TRECVID 2007. We submitted 10 runs results based on SVM classifiers and several separate detectors. BUPT_01 Default SVM parameters and a low threshold for motion detector BUPT_02 Default SVM parameters and a low threshold for edge detector BUPT_03 Make high penalty for false cuts to increase th...

—The FFT lter bank-based summation CFAR detector is widely used for the detection of narrowband signals embedded in wideband noise. The simulation and implementation of this detector involves some problems concerning the reliable computation of the normalized detection threshold for a given probability of false alarm. This paper presents a comprehensive theoretical treatment of major aspects of...

We consider the problem of detecting changes in a multivariate data stream. A change detector is defined by a detection algorithm and an alarm threshold. A detection algorithm maps the stream of input vectors into a univariate detection stream. The detector signals a change when the detection stream exceeds the chosen alarm threshold. We consider two aspects of the problem: (1) setting the alar...

Room-temperature detector, manufactured by the company ‘‘SPINOR’’ (Tomsk Russia) was tested for the investigations of the coherent synchrotron radiation characteristics at the bent electron beam of FLASH (Hamburg) in the wavelength region 0.5–3mm. Detector is based on a low-threshold diode and a broadband antenna with a built-in preamplifier. The detector characteristics allowed us to measure a...

Narrow muon bundles in underground detectors permit to study muoproduction reactions that take place in the surrounding rock. We analyze the relevance of a QED+QCD reaction, muoproduction of “open charm”. The contribution to double muon events is estimated to be 4% of the one due to QED “trident” process, for an ideal detector located under a rock depth of 3 km water equivalent, and an observat...

I discuss the physics case of the standard Neutrino Factory facility coupled to an iron detector to exploit the so-called ‘Golden-Channel’. The performance of the facility is impressive, although it is not free from degeneracies arising from a combination of physics and instrumental limitations. Nevertheless, one could explore at great depth the parameter of the leptonic mixing matrix as well a...

Abstract: In this paper, a multilevel-quantized softlimiting (SL-MQ) detector for frequency hopping spread spectrum multiple access (FH-SSMA) system is proposed and analyzed. Numerical and simulation results in frequency selective Rayleigh fading channels show that as compared to the hard-limiting (HL) detector, the new SL-MQ with can improve the system capacity by almost at the bit error rate ...

A model to simulate the response of a silicon pixel detector is described. The effects of geometrical charge sharing, electronic noise threshold dispersion, capacitive coupling between pixel channels and δ-rays production have been taken into account. The model has been tested on the Omega3 chip, which is the direct predecessor of the ALICE pixel detector, to be used in the inner tracking syste...