The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We present a fast converging scheme for estimating the coarse frequency offset in multi-band orthogonal frequency division multiplexing (MB-OFDM) based ultra-wideband (UWB) systems. Our estimator performs an averaging of initial estimate over multiple bands and shows an improved estimation of =3 times for band group 1 compared to our earlier proposed scheme. Cramer Rao lower bound (CRLB) on the estimation...
We present a fast converging scheme for estimating coarse frequency offset (FO) in multi-band orthogonal frequency division multiplexing (MB-OFDM) based ultra-wideband (UWB) systems for wireless personal area network (WPAN). Our estimator performs an averaging of initial estimate over multiple bands and shows an improved estimation of cong3 times in terms of estimation error variance for band group...
This work explores theoretically the unique aspects of different signal processing stages in a Multi-Band (MB) Orthogonal Frequency Division Multiplexing (OFDM) based system in realistic Ultra-Wideband (UWB) channel. In the process of analysis, it emphasizes the significant aspects of signal processing steps in UWB receiver design comparing a narrow-band system. The analysis preliminary considers...
In this paper a frequency offset estimation scheme is presented for coarse frequency offset estimation of multi-band OFDM (MB-OFDM) based ultra-wideband (UWB) systems considering different normalized carrier frequency offsets and different channel frequency responses in three different bands. The Cramer Rao Lower Bound (CRLB) for variance of the estimated frequency offset is derived and compared with...
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...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.