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A MB-PULSED-OFDM System using DWPT for UWB WPAN Environment: Ultrawideband Communication - Softcover

Das, Choudhury Sasmita

 
9783659163616: A MB-PULSED-OFDM System using DWPT for UWB WPAN Environment: Ultrawideband Communication
Softcover
ISBN 10: 3659163619 ISBN 13: 9783659163616
Verlag: LAP LAMBERT Academic Publishing, 2012

Inhaltsangabe

Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) approach using UWB signals with short duration of pulses provide unique advantages in short-range high data rate WPAN physical layer applications, which include easy penetration through obstacles, high precision ranging and low processing power. Non-pulsed MB-OFDM system suffers from the frequency selectivity of the fading channels. MB-pulsed-OFDM is used eliminate heavy error correction coding for dense multipath frequency selective channel model. The IFFT module in the pulsed-OFDM transmitter is much less complex than the IFFT module in the normal OFDM because MB-pulsed-OFDM uses 32 subcarriers while normal MB-OFDM uses 128 sub-carriers. Each subcarrier has large side-lobes, requiring careful filtering and sufficient guard interval bands in a traditional MB-OFDM UWB system. Again Fourier based MB-OFDM signals only overlap in frequency domain. To overcome these aforementioned problems associated with MB-OFDM UWB system, a finer and adjustable resolution of frequencies at high frequency is presented as wavelet basbased transform technique i.e. discrete wavelet packets transform (DWPT) instead of using FFT.jai jagannath

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Verlag
LAP LAMBERT Academic Publishing
Erscheinungsdatum
2012
Sprache
Englisch
ISBN 10 
3659163619
ISBN 13 
9783659163616
Einband
Taschenbuch
Anzahl der Seiten
80
Kontakt zum Hersteller
SIA OmniScriptum Publishing
customerservice@vdm-vsg.de

Brivibas gatve 197
Riga
1039
Lettland