The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2013
Filed:
Nov. 19, 2009
(Jason) Tsao-tsen Chen, Älvsjö, SE;
Per Ernstrom, Stockholm, SE;
Sten Ingemar Sjoberg, Landvetter, SE;
Kai Yu, Vällingby, SE;
(Jason) Tsao-Tsen Chen, Älvsjö, SE;
Per Ernstrom, Stockholm, SE;
Sten Ingemar Sjoberg, Landvetter, SE;
Kai Yu, Vällingby, SE;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
Method and apparatus for generating a set of generator polynomials for use as a tail biting convolutional code to operate on data transmitted over a channel comprises: (0) specifying a constraint and a low code rate for a tail biting convolutional code, where the low rate code is lower than 1/n (n being an integer greater than 4); (1) selecting valid combinations of generator polynomials to include in a pool of potential codes, each valid combination being a potential code of the low rate code; (2) determining first lines of a weight spectrum for each potential code in the pool and including potential codes of the pool having best first lines in a candidate set; (3) determining best codes of the candidate set based on the first L number of lines in the weight spectrum; (4) selecting an optimum code(s) from the best codes; and (5) configuring a circuit(s) of a data transceiver to implement the optimum code(s).