Title :
Reducing zero padding overhead in Multiband OFDM with time diversity
Author :
Ray, Baijayanta ; Chakrabarti, Saswat ; Venkataraghavan, P.K.
Author_Institution :
IIT Kharagpur, Kharagpur
fDate :
Oct. 30 2007-Nov. 2 2007
Abstract :
In the current Multiband OFDM standard, (ECMA368), zero padding (ZPS) of length 28.9% of the OFDM symbol duration is appended to each symbol to tackle delay spread. We propose alternate strategies for the QPSK rates (that employ time diversity) in MBOFDM, which can reduce the ZPS overhead by 50% without any performance degradation. This enhances the transmission efficiency calculated in terms of the time required to transmit a packet of given length with a given data rate.
Keywords :
OFDM modulation; ZPS; multiband OFDM; orthogonal frequency division multiplexing; time diversity; transmission efficiency; zero padding overhead; Bandwidth; Degradation; Delay effects; Diversity reception; Energy capture; OFDM modulation; Proposals; Quadrature phase shift keying; Telecommunication standards; Ultra wideband technology; multiband; ofdm; pdded; suffix; ultrawideband; uwb; zero;
Conference_Titel :
TENCON 2007 - 2007 IEEE Region 10 Conference
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-1272-3
Electronic_ISBN :
978-1-4244-1272-3
DOI :
10.1109/TENCON.2007.4429001
