Method and device for decoding symbol strings for application relates to telecommunications networks, base and mobile communications stations, with reduced hardware requirement

摘要

For symbols connected by a predetermined parity relationship, previously created by a coder, their estimation is realized with a function having several components for calculating probabilities associated with the state of the coder. The probabilities are of three types ( alpha k, beta k, Lke), the first resulting from the effect of previous states on the current state, the second from the current state and the third according to whether a symbol belongs to a coding alphabet. An Independent claim is made for a device for decoding symbol strings with a specific multiplexor (12) controlled by a state machine (14) with a computer (10) such that the three types of probability can be determined using the same circuit.