Title :
Symbol timing synchronization for ultra-wideband (UWB) multi-band OFDM (MB-OFDM) systems
Author :
Sen, Debarati ; Chakrabarti, Saswat ; Kumar, R. V Raja
Author_Institution :
G. S. Sanyal Sch. of Telecommun., Indian Inst. of Technol., Kharagpur
Abstract :
A low-complexity correlation based symbol timing synchronization (CBTS) algorithm for UWB MB-OFDM systems is presented. The correlation based scheme attempts to locate the start of the FFT window during frame synchronization sequence (FS) of the received preamble by firstly correlating the received samples with known training samples and then identifying the first significant multi-path component by comparing the correlated samples of two consecutive OFDM symbols against a predefined threshold. Performance of the proposed algorithm is measured through mean-squared error (MSE) of timing estimation and probability of synchronization. Each of the 100 channel realizations for UWB channel model1 (CM1) (0-4 m LOS) and CM2 (0-4 m NLOS) are simulated for 1000 noisy channel realizations for 17 dB SNR. Synchronization probability and MSE for CM1 and CM2 are reported for 320 Mbps data rate.
Keywords :
OFDM modulation; correlation methods; fast Fourier transforms; mean square error methods; synchronisation; telecommunication channels; ultra wideband communication; FFT; UWB channel model; correlation based symbol timing synchronization algorithm; mean-squared error method; ultra-wideband multiband OFDM system; Bandwidth; Delay estimation; FCC; Frequency estimation; Frequency synchronization; Interference; Narrowband; OFDM; Timing; Ultra wideband technology; MB-OFDM; OFDM; UWB; timing synchronization;
Conference_Titel :
Communication Systems Software and Middleware and Workshops, 2008. COMSWARE 2008. 3rd International Conference on
Conference_Location :
Bangalore
Print_ISBN :
978-1-4244-1796-4
Electronic_ISBN :
978-1-4244-1797-1
DOI :
10.1109/COMSWA.2008.4554407
