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Calculus of the Power Spectral Density of Ultra Wide Band Pulse Position Modulation Signals Coded with Totally Flipped CodeDURNEA, T. N., ALEXANDRU, N. D.
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Ultra Wide Band, Pulse Position Modulation, Totally Flipped Code, Power Spectral Density
systems(5), spectral(5), alexandru(4)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2009-02-03
Volume 9, Issue 1, Year 2009, On page(s): 16 - 21
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2009.01003
Web of Science Accession Number: 000264815300003
SCOPUS ID: 67749111405
UWB-PPM systems were noted to have a power spectral density (p.s.d.) consisting of a continuous portion and a line spectrum, which is composed of energy components placed at discrete frequencies. These components are the major source of interference to narrowband systems operating in the same frequency interval and deny harmless coexistence of UWB-PPM and narrowband systems. A new code denoted as Totally Flipped Code (TFC) is applied to them in order to eliminate these discrete spectral components. The coded signal transports the information inside pulse position and will have the amplitude coded to generate a continuous p.s.d. We have designed the code and calculated the power spectral density of the coded signals. The power spectrum has no discrete components and its envelope is largely flat inside the bandwidth with a maximum at its center and a null at D.C. These characteristics make this code suited for implementation in the UWB systems based on PPM-type modulation as it assures a continuous spectrum and keeps PPM modulation performances.
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 Increasing the Performance of Energy-Detection Based UWB Demodulator with a Supplementary Integration Block, POPA, A., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 3, Volume 12, 2012.
Digital Object Identifier: 10.4316/aece.2012.03004 [CrossRef] [Full text]
 Accurate Analytical Multiple-Access Performance of Time-Hopping Biorthogonal PPM IR-UWB Systems, HERCEG, M., GRBIC, R., SVEDEK, T., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 2, Volume 11, 2011.
Digital Object Identifier: 10.4316/aece.2011.02010 [CrossRef] [Full text]
 A random pulse phase jitter technique for suppression of frequency spikes associated with UWB pulse position modulation, Aidong Yang, , Hui Qian, , Hong Nie, , Zhizhang Chen, , Lun Yu,, 2010 IEEE International Conference on Ultra-Wideband, ISBN 978-1-4244-5305-4, 2010.
Digital Object Identifier: 10.1109/ICUWB.2010.5615340 [CrossRef]
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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