Detecting format of a transport channel

摘要

A system and method for determining a transport format of a transport channel is described. A guiding stream is received on a guiding transport channel and a guided stream is received on a guided transport channel. The guided stream is convolutionally decoded to produce a plurality of Viterbi path metrics. A transport format for the guided transport channel is selected from possible transport formats. The possible transport formats are determined by information provided on the guiding transport channel. The selection of the transport format is based at least in part on a metric computed from a combination of the Viterbi path metrics.

主权项

1. A method comprising:
receiving, at a receiver, a guiding stream on a guiding transport channel and a guided stream on a guided transport channel; convolutionally decoding the guided stream to produce a plurality of Viterbi path metrics; and selecting a transport format for the guided transport channel from a predefined plurality of possible transport formats that are determined by information provided on the guiding transport channel, based at least in part on a state metric computed from a combination of the Viterbi path metrics, wherein the state metric comprises a difference between a first operand and a second operand, the first operand being computed using at least one intermediate Viterbi path metric and the second operand being computed using a corresponding final Viterbi path metric.