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Search results for: interference
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Year: 2012, Volume: 12, Number: 3
... power consumption and the benefit A major performance-degrading factor is the noise floor, of multipath energy capture. However, this technique is very sensitive to noise and channel interference. To minimize this which is aggravated for UWB signals with a large time- drawback, optimizations have been proposed with respect to bandwidth product [5] ...
Year: 2012, Volume: 12, Number: 2
... components fault identification has strong anti- synchronical vector information in the overall system. interference ability and great redundancy. Principal component analysis (PCA) [10] ... 1210-1219, Feb. 2008. [Online]. Available: identification has strong anti-interference ability and great http://dx.doi.org/10.1016/j.eswa.2006.12.010 [12 ...
Year: 2012, Volume: 12, Number: 2
... mixtures with segregated speech. "NR" stands for noise residue, and PNR different SNRs. Fig. 8 shows that the proposed system indicates the percentage of interference included in the works much better for speech and music mixtures, when segregated speech. By definition, both numbers are compared to the results for speech and ...
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, ...
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