Title :
Synchronization acquisition threshold based on peak-to-average ratio of correlation energy for UWB communications
Author :
Li, Chen ; Pei, Yukui ; Ge, Ning
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Suffered from low signal-to-noise ratio (SNR) and dense multipath, synchronization acquisition for pseudonoise (PN) sequences is critical in UWB communication systems. Conventional acquisition method adopts fixed-threshold, which always results in high false alarm probability. In this paper, an threshold scheme based on peak-to-average ratio of correlation energy is proposed, and the probability of false alarm and detection is also analyzed. Simulation results show that, the false alarm probability can be reduced an order of magnitude at SNR less than -lOdB, while the detection probability coincides with the conventional when using PN sequences of length 127 in the CM1 and CM3 channel.
Keywords :
correlation methods; multipath channels; ultra wideband communication; CM1 channel; CM3 channel; UWB communication systems; correlation energy; dense multipath; detection probability; fixed-threshold; high false alarm probability; peak-to-average ratio; pseudonoise sequences; synchronization acquisition threshold; Correlation; Peak to average power ratio; Signal to noise ratio; Synchronization; Ultra wideband communication; Vehicular and wireless technologies; White noise; UWB; acquisition threshold; peak-to-average ratio;
Conference_Titel :
Wireless Communications and Signal Processing (WCSP), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-1009-4
Electronic_ISBN :
978-1-4577-1008-7
DOI :
10.1109/WCSP.2011.6096909
