Patent ID: 6393065
Filing Date: 2002-05-21
Classification: H03M,H04L

Abstract:
Coding device (10) supplying code words, the symbols of which are capable of modulating a physical quantity on a transmission channel making use of symbols of a first alphabet, the decoding of these ode words using symbols of a second alphabet containing the first alphabet, the cardinal of the alphabet being strictly greater than that of the first alphabet and not being an integer power of the cardinal of the first alphabet, a device characterized in that it has:an input (103,111) of â€œprimary symbols belonging to the first alphabet; processing means (104, 105, 106) adapted to determined redundant symbols capable of allowing decoding of the code words formed primary symbols and redundant symbols, by a decoder (20) working on the second alphabet by solving a system of equations expressing the constraints to be met so that said redundant symbols are in the first alphabet. an output (107) of the symbols of the code words.