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.
Good performance of turbo code can be obtained by updating extrinsic information in the iterative decoding process. At first, transition patterns are categorized by the characteristics of extrinsic information in this paper. The distribution of these patterns is surveyed according to signal-to-noise ratio. The dominant error pattern is determined based on the results. And error performance improvement...
LT(Luby transform) encoding is widely used for rateless codes. But uniform choice of messages in the LT encoding process conflicts with the merit of BP(belief propagation) decoding. So more codeword symbols than expected are required for the reliable recovery of message symbols. Thus a new encoding scheme with non-uniform selection of messages that can decrease average overhead and computational complexity...
T-DMB (terrestrial-digital multimedia broadcasting) system is one of the mobile broadcasting systems. The established T-DMB system satisfies the conventional specifications. But the needs for upgrading system arise from many aspects in these days. Thus it is necessary to upgrade T-DMB system to allow higher throughput and guarantee more reliable reception. Therefore a hierarchical modulation scheme...
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.