TIME VARYING DATA PERMUTATION APPARATUS AND METHODS

摘要

Multiple data permutation operations in respective different dimensions are used to provide an overall effective data permutation using smaller blocks of data in each permutation than would be used in directly implementing the overall permutation in a single permutation operation. Data that has been permuted in one permutation operation is block interleaved, and the interleaved data is then permuted in a subsequent permutation operation. A matrix transpose is one example of block interleaving that could be applied between permutation operations.

主权项

1. A Forward Error Correction (FEC) coding system comprising:
a FEC coding device; an error decorrelator, operatively coupled to the FEC coding device, to apply multiple permutation operations to an encoded data stream in respective different dimensions.