Lucent Technologies Inc.

At+t Corp.

Luis E Caceres

Walid Ahmed

Jin-Ghee Goh

Cliff Sui

Linda Ann Seltzer

A method and system of decoding data including a padding unit, interleaver unit and decoder. A block of data symbols where each data symbol represents an encoded data bit, is received by the padding unit. The padding unit determines if the block data symbols has a number of data symbols equal to a threshold value M. If the number of data symbols is less than M, the padding unit pads the block of data symbols with at least one padding symbol. The decoder decodes the padded block of data symbols.

Method and system of decoding an encoded data block

A method for processing telecommunications signals to alleviate echo during a voice communication between a local talker and a remote talker comprises the application of circular buffers for near and far end signals to preserve processing time. Overlapping blocks of samples are processed and indexed by incrementing the index over time to generate an array for storing magnitude coherence versus time delay between outgoing and incoming samples. Echo is clipped based on power spectral matching. The clipped echo is replaced with noise fill of at least one of two types, white noise and tonal noise, at an appropriate level. Also, crackle which comprises high energy spikes and a residual echo effect which is low energy, bursty and non-linear may be identified and replaced with noise fill.

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Luis E Caceres