H - Electricity – 03 – M
Patent
H - Electricity
03
M
H03M 7/00 (2006.01) H03M 13/23 (2006.01) H03M 13/27 (2006.01) H03M 13/41 (2006.01) H04J 11/00 (2006.01) H04L 23/02 (2006.01)
Patent
CA 2074595
A method and apparatus is provided for encoding and decoding. In encoding, bits (202) are encoded (204) into symbols (206) such that maximum likelihood decoding is facilitated. Groups of symbols (206) are translated by either interleaving by group each group within a block (208) and subsequently deriving an orthogonal code from each group (212) or deriving an orthogonal code from each group and subsequently interleaving by code each code within a block. In decoding, groups of samples (228, 229) are transformed by either generating metrics and index symbols (242) for each group of samples (232, 234, 236, 238, 240) and subsequently deinterleaving by group each group of metrics within a block (244) or deinterleaving by group each group of samples within a block and subsequently generating metrics and index symbols for each deinterleaved group of samples. Each metric represents the confidence that a group of samples is a particular orthogonal code. Subsequently, maximum likelihood decoding (266) generates an estimated bit (268) from the index symbols and metrics (260).
Falconer David D.
Ling Fuyun
Gowling Lafleur Henderson Llp
Motorola Mobility Inc.
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