Technique for processing encoded information in a wireless communication network

摘要

A technique for processing information in a wireless communication network is described. In a method in accordance with the technique, a signal encoded with a convolution code is received. The encoded signal comprises information and a check value. The encoded signal is decoded using a Viterbi algorithm to derive the information and the check value. The decoding includes computing a Viterbi state metric. A reliability parameter is then determined based on the Viterbi state metric. The information is selectively processed depending on both the check value and the reliability parameter.

主权项

1. A method of processing information in a wireless communication network, the method comprising:
receiving a signal encoded with a convolutional code, wherein the encoded signal comprises information and a check value and wherein the received signal is represented by soft bits; decoding the encoded signal using a Viterbi algorithm to derive the information and the check value, wherein the decoding includes computing a Viterbi state metric (Λ); deriving a reliability parameter based on the Viterbi state metric (Λ), wherein the reliability parameter is a Viterbi path metric; deriving a reference value (Γ) based on the signal, wherein the reference value (Γ) is determined by summation of absolute values of the soft bits; deriving a second reliability parameter (R) as a function of the derived reliability parameter and the reference value (Γ), wherein the second reliability parameter (R) is a homogeneous function of degree zero; and selectively processing the information depending on the check value, the second reliability parameter (R), and the reference value (Γ), wherein the information is discarded if the second reliability parameter fails to fulfil a predefined reliability criterion (RTH).