Patent ID: 6931584

Claim:
A wireless transmit receive unit (WTRU) for implementing forward error detection decoding (FEC) of received communication signals comprising: a demodulator configured to process received modulated communication signals for a particular communication channel and to produce demodulated signals; a channel rate estimation device configured to process the received communication signals for the particular communication channel and to produce channel change rate estimates; a signal to noise ratio (SNR) estimation device configure to produce SNR estimates based on observation windows of a calculated number of samples of the received signal where the number of samples used for each observation window is calculated a function of the channel change rate estimates produce by the channel rate estimation device; a combiner device configured to produce adjusted demodulated signals based on the demodulated signals produced by the demodulator and the SNR estimates produced by the SNR estimation device; and an FEC decoder configured for decoding the adjusted demodulated signals and outputting decoded information bits.