LDPC performance improvement using SBE-LBD decoding method and LBD collision reduction

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United States of America Patent

PATENT NO 10270466
APP PUB NO 20180048328A1
SERIAL NO

15237341

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Abstract

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Systems and methods are described for performing Layered Belief LDPC decoding on received Standard Belief LDPC encoded data bursts. In on implementation, a receiver: demodulates a signal, the demodulated signal including a noise corrupted signal derived from a codeword encoded using standard belief LDPC encoding; converts the noise corrupted signal derived from the standard belief LDPC encoded codeword to a noise corrupted signal derived from a layered belief LDPC encoded codeword; and decodes the noise corrupted signal derived from the layered belief LDPC encoded codeword using a layered belief LDPC decoder. In further implementations, systems are described for reducing collisions in Layered Belief LDPC decoders that occur when multiple parity checks need the same soft decision at the same time. In these implementations, elements in an original LBD decoder table are rearranged to increase the distance between elements specifying the same location in a RAM where soft decisions are stored.

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Patent Owner(s)

  • HUGHES NETWORK SYSTEMS, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bhatia, Gaurav Ellicott City, US 44 748
Eroz, Mustafa Rockville, US 127 2885
Huang, Qiujun Potomac, US 5 4

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