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.
Article justifies a term of “assessment of infrmation efficiency of error-correcting codes”. It describes a model of descrete communication channel with parameters, which are nessesary for assessment of information efficiency. Authors provide a methodology of comprehensive assessment of information efficiency based on Varshamov-Gilbert, Plotkin and Shannon bounds. Made an assessment of information...
Summary form only given. Gallarger's decoding algorithm A is a typical algorithm to theoretically analyze the decoding of Low-Density Parity-Check (LDPC) code ensembles. It is the message passing algorithm with the simplest hard decision. It is well recognized that the performance of Gallarger's decoding algorithm A cannot approach channel capacity because of the hard decision process. Although many...
In this paper, a method to design check-concentrated LDPC degree distributions for the erasure channel is proposed. This method is obtained taking a derivative matching approach. It consists of matching the first and high-order derivatives of the variable node decoder EXIT function and inverse check node decoder EXIT function in order to reduce the gap between the two curves in the EXIT chart. A sufficient...
Using the concept of net coding gain (NCG), we measure the benefits of using a class of rate 1/2 codes in error control systems. A bounded distance decoder for group codes is assumed. The NCG can be compared with other expedients such as increasing transmitted signal power. Although the codes are used in conjunction with phase and frequency modulation systems, the technique is valid for any binary...
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.