Patent ID: 6332005
Filing Date: 2001-12-18
Classification: H04J,H04L

Abstract:
A method for converting a signal data rate from a lower data rate to a higher data rate in a digital data transmission system, the method comprising the steps ofA1) transmitting a signal by using frames of a given length, which length corresponds to the higher data rate,B1) grouping the signal to a first block the length of which corresponds to the lower data rate,C1) subjecting symbols to be transmitted to repetition coding,D1) calculating the number of symbols missing from the frame by subtracting from the frame length the number of symbols in the first block, and if the number of the missing symbols is greater than one,E1) repeating every ith symbol of the first block, i being determined as the nearest bigger or an equal integer when the number of symbols in the first block is divided by the number of symbols missing from the frame,F1) updating the first block by removing therefrom the symbols that have been repeated,G1) updating the number of symbols missing from the frame by subtracting therefrom the number of the symbols that have been repeated, and if the number of the missing symbols is greater than one,H1) proceeding to step E1).