BLIND JOINT TRANSPORT FORMAT DETECTION

摘要

A receiver (300) is provided that jointly determines what transport format combination is currently being utilized by a transmitter (200) multiplexing (201) several transport channels onto a single over-the-air channel (209). The receiver (300) estimates the transmitted sequence and, not knowing the format combination being utilized, makes estimates of the information bits for each of the possible transport format combinations. CRC metrics are determined (one for each transport or data channel) for each possible transport format combination, and these CRC metrics are combined into a single transport format combination metric for the particular transport format combination being tested. At the end the transport format with the largest metric is chosen. The definition of the metric also considers the reliability of a correct CRC check, that is the probability that the check is true for a certain transport format even if that transport format was not used.