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Search results for: interference
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Year: 2011, Volume: 11, Number: 3
... must vacate the spectrum immediately and transfer their communications to II. RELATED WORK another idle spectrum. Thus, a spectrum handoff scheme is To prevent secondary transmission from interference by required to maintain the current transmission with minimum appearance of PUs, the authors in [6] propose a spectrum selection rule by using only one sub-band ...
Year: 2011, Volume: 11, Number: 2
... signals and including their modulation (BPPM) scheme in the presence of a multi-user interference (MUI). The derived expression is validated with antipodal version which overall ... Tc € d l( k ) ), (1) transmission and anti-interference characteristics. Therefore where E s is the energy per symbol, N s ...
Year: 2011, Volume: 11, Number: 1
... future challenge we identify the quantities that can characterize the BSS, as the source to development of an algorithm to compensate for the scaling distortion ratio, source to interference ratio, sources to noise and source order uncertainty in real time. ratio and sources to artifacts ratio. We adopted the signal to interference ratio (SIR ...
Year: 2011, Volume: 11, Number: 1
... nonuniform microwave energy distribution, strong a number of important advantages: it avoids special interference from the skin and chest wall, and consequently, processing of skin tissues ... distribution in the body. Efforts should be made towards suppression of clutter due to interferences II. MICROWAVE RADIOMETRY from the breast skin, nipple, chest wall, ...
Year: 2011, Volume: 11, Number: 1
... ) antennas. A solution is to use a spatial interference where fi() is the modulation function corresponding ... factors, and Section VI concludes the paper. spatial interferences. II. SYSTEM MODEL Index Terms €” space-time ... decoder and the one used at the input of the interference-canceling block. Scaling IV, together with the influence ...
Year: 2011, Volume: 11, Number: 1
... unwanted noise and Figure 1. Geometry and global coordinate system of D ‚ E interference, thereby improving the quality of desired signal. cylindrical conformal array. There ... output with 4 elements spaced at a half wavelength apart. € 9, interference-plus-noise power while maintaining a € 0.01/ 3m, L € / ...
Year: 2010, Volume: 10, Issue: 4
... control, the proposed approach offers a faster response I. INTRODUCTION and characteristics insensitive to parameter variation and Due to its flexibility, stability and the fact that the interference [10], [11]. associated power electronic converter requires only a The paper is organized as follows: section II presents the fraction of the ...
Year: 2010, Volume: 10, Issue: 4
... several consecutive torque ripple and distortions of the stator voltage are periods. A filtration of the volatile switching frequency is reduced. difficult, and therefore the level of interference is large. The control structure is shown in Fig. 5. Description of The constant switching frequency can be achieved by the each block is the same ...
Year: 2010, Volume: 10, Issue: 4
... statistics [15]. The Index Terms €” cochannel interference, correlated fading spectrum utilization efficiency may be improved ... Selection Combining in the Presence of Arbitrary Number of Cochannel Interferences Nikola M. SEKULOVI†, Mihajlo Œ. STEFANOVI† ... terminals so antenna elements can not be system designs are interference-limited [2 ], i.e. the level of ...
Year: 2010, Volume: 10, Issue: 3
... . into the passive filter and controlled by notch algorithm. This 9 Mechanical vibrations. structure has been applied on a test HVDC power system, is 9 The interference with the telecommunication presented as a technical solution makes it possible to eliminate networks. the disadvantages from passive filtering, and also economic 9 Malfunctions of certain electrical ...
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