Patent ID: 6418549
Filing Date: 2002-07-09
Classification: H03M,H04L

Abstract:
A method of data-transmission from a transmitter to a receiver in data packets using an arithmetic coder without using cyclic redundancy check codes, comprising:adding a forbidden symbol, which occupies &egr;-th portion of a coding space to a data stream of said data to increase redundancy, said forbidden symbol not being meant to be coded; controlling said coding space as necessary to control the redundancy; tracking to see if said forbidden symbol is decoded at the receiver and using a presence of such decoded forbidden symbol for error detection in said data transmission; conveying a location of an error to the transmitter; and requesting a retransmission of n bits in a data packet after the error location where n is related to a confidence level, whereby continuous error detection in said data transmission is performed with automatic repeat request.