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US 2012/0269176 A1Published application
Variable rate coding for forward link
AssigneeIPR Licensing, Inc.
InventorJames A. Proctor, JR.
Life of this patent
Estimating the term…
Abstract
A forward error correction (FEC) block size is maintained at a constant size. Coding rate adjustments may be made by changing the number of information bits per symbol, or Forward Error Code (FEC) coding rate. Therefore, as the number of information bits per symbol is changed, the number of output bits is always maintained. The scheme permits for a greater flexibility and selection of effective data rates.
Claims14
A subscriber unit comprising:
- a forward error correction (FEC) encoder configured to encode a plurality of frames, each of the plurality of frames including a variable number of data bits, to include an error correction code such that a resulting number of output symbols remains fixed, wherein the error correction code is selected based on a channel condition associated with the subscriber unit.
A subscriber unit comprising:
- a framer configured to receive data bits and generate frames having a predetermined length;
- and
- a forward error correction (FEC) encoder configured to encode the frames to include an error correction code, wherein a length of the encoded frame remains fixed as a number of data bits varies.
A method for encoding data, the method comprising:
- receiving a plurality of frames, each of the plurality of frames including a unique number of bits of data;
- and
- forward error correction (FEC) encoding each of the plurality of frames to include a plurality of error correction codes, one error correction code for each of the plurality of frames, to produce a plurality of encoded frames such that a resulting number of encoded symbols of each of the plurality of encoded frames is the same, wherein the error correction code is selected based on a channel condition associated with a subscriber unit.
Dependencies are inferred from the claim text.