Methods and apparatus for error-correcting difference-triangle-set product convolutional codes

A method performed by a wireless transmit receive unit (WTRU) for Product Convolutional Code (PrCC) encoding, the method comprising:

• determining a plurality of input bits for each of a plurality of component encoders of a PrCC encoder;
• determining a plurality of Encoded Bit Blocks (EBBs) of the PrCC encoder, each respective EBB including a set of previously encoded first Transmit Segments (TSs);
• generating a component codeword using Q−1 EBBs of the plurality of EBBs, wherein Q is an integer value greater than or equal to 2, and the component codeword includes:
• (1) a second TS, (2) a number of Virtual Segments (VSs) based on the number of the Q-1 EBBs, and (3) a plurality of parity bits;
• and
• transmitting an output data stream including information indicating at least the second TS which is extracted from the component codeword.

A wireless transmit receive unit (WTRU) comprising:

• a processor and a transceiver which are configured to:
• determine a plurality of input bits for each of a plurality of component encoders of a Product Convolutional Code (PrCC) encoder,
• determine a plurality of Encoded Bit Blocks (EBBs) of the PrCC encoder, each respective EBB including a set of previously encoded first Transmit Segments (TSs),
• generate a component codeword using Q−1 EBBs of the plurality of EBBs, wherein Q is an integer value greater than or equal to 2, and the component codeword includes:
• (1) a second TS, (2) a number of Virtual Segments (VSs) based on the number of the Q−1 EBBs, and (3) a plurality of parity bits, and
• transmit an output data stream including information indicating at least the second TS which is extracted from the component codeword.