Title :
A novel preamble for OFDM symbol synchronization that can outperform PN-based preambles in narrowband channels
Author :
Umari, Maher H. ; Razazian, Kaveh ; Petrovska, Olga
Author_Institution :
Signal Process. & Conversion Bus. Unit, Maxim Integrated Products, Irvine, CA, USA
Abstract :
A new preamble for correlation-based symbol synchronization schemes in narrowband channels is presented. While autocorrelation properties of Pseudo-noise (PN) sequence preambles make them very well suited for symbol synchronization in wideband channels, the same is not necessarily true in narrowband channels. In fact, a narrowband preamble that has a cross-correlation - between the input and output of the channel - with smaller side lobes than a PN-based preamble can lead to better symbol synchronization in narrowband channels. Such a preamble is presented along with simulation results showing the performance of a typical symbol synchronization scheme when using the proposed narrowband preamble vs. a PN-based preamble.
Keywords :
OFDM modulation; broadband networks; synchronisation; telecommunication channels; OFDM symbol synchronization; PN-based preambles; Pseudo-noise sequence preambles; autocorrelation properties; correlation-based symbol synchronization; narrowband channels; wideband channels; Autocorrelation; Brain modeling; Communication standards; Correlators; Degradation; FCC; Narrowband; OFDM; Signal processing; Wideband;
Conference_Titel :
Circuits and Systems (MWSCAS), 2010 53rd IEEE International Midwest Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-7771-5
DOI :
10.1109/MWSCAS.2010.5548699
