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Search results for: interference
126 results found.
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Year: 2012, Volume: 12, Number: 1
... , in which the inter- applications generally requires that sensor nodes are densely cluster interference caused by the border nodes is solved by the and evenly deployed so as ... Spectrum (DS- SS) code, a CDMA-like scheme, to avoid such interferences. A. Sensor Node Clustering It is not applicable in the context of ...
Year: 2012, Volume: 12, Number: 1
... and their subsequent transmission within the basic implementations. bandwidth, without the risk of interference with mobile Several solutions approximate the Gaussian filter with telephony or the classical television ... J. Dimitrov illustrated the approximation of the constraints. In order to avoid the interferences, the Federal Gaussian pulse within( -3, 3) interval, ...
Year: 2011, Volume: 11, Number: 4
... volume in which multiple shelves are Tier 2 confined with a reduced number of such special antennas. 340 mm Tier 3 Beams are complimentary Tier 4 Figure 6. Interference between the adjacent tiers may degrade the system detection/localization accuracy The placement of multiple antennas not only maximizes the reading capabilities but also introduces new issues: ...
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 ...
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