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.
An adaptive channel estimation method in 802. 16 e system, based on Doppler shift estimation, is proposed. The coherence time can be gotten through Doppler shift estimation. Then the time domain channel impulse response (CIR) gotten by least squares (LS) algorithm can be refined according to the correlation duration the coherence time. The simulation results in the frequency band of 2.4 GHz show that...
This paper presents an overview analysis of EMC problems on a UWB system. After outlining the enormous potentialities of UWB systems and the benefits in terms of capacity and flexibility coming from their large bandwidth, then we analyze the dedicated UWB channel model. The simulation result is given in the end of the paper using the dedicated UWB channel.
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.