Importance

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Abstract

A system and method are disclosed for allowing a user at the transmit end of a communication link to change a forward error correction scheme to select between relatively high spectral efficiency and relatively small error block processing delay. The system can include a modem having a plurality of encoding modules, at least one modulation module and a user input module. Pluralities of switches are provided to selectively route an input data-stream to one of the encoding modules. The switches are operationally coupled with the user input module allowing the user to route the input data-stream to a user-selected encoding module. At the user-selected encoding module, the input data-stream is processed to add an FEC redundancy and output FEC blocks having an FEC block size that is unique to the selected encoding module. In this way, the user selects the different encoding modules and the corresponding different FEC block sizes.

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First Claim