Title :
A new timing estimation and compensation scheme for ultra-wideband MB-OFDM communications
Author :
Sen, Debarati ; Chakrabarti, Saswat ; Kumar, R. V Raja
Author_Institution :
G. S. S. 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 here. The scheme attempts to locate the start of the fast Fourier transformation (FFT) window during frame synchronization (FS) sequence 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. The algorithm is tested by computer simulation over all UWB channel models (CM), CM1-CM4; each for 100,000 noisy channel realizations under 17 dB signal-to-noise ratio (SNR). Performance of the proposed algorithm is measured through mean-squared error (MSE) of timing estimation and probability of synchronization.
Keywords :
OFDM modulation; correlation methods; fast Fourier transforms; mean square error methods; synchronisation; ultra wideband communication; UWB channel model; computer simulation; correlation based symbol timing synchronization algorithm; fast Fourier transformation; frame synchronization; mean-squared error method; signal-to-noise ratio; timing estimation; ultra-wideband MB-OFDM communication; Bandwidth; Delay estimation; Frequency synchronization; Interference; OFDM; Power system modeling; Proposals; Signal to noise ratio; Timing; Ultra wideband technology;
Conference_Titel :
Wireless and Optical Communications Networks, 2008. WOCN '08. 5th IFIP International Conference on
Conference_Location :
Surabaya
Print_ISBN :
978-1-4244-1979-1
Electronic_ISBN :
978-1-4244-1980-7
DOI :
10.1109/WOCN.2008.4542538
