Method and apparatus for varying lengths of low density party check codewords
AssigneeIntel Corporation
InventorsBo Xia, Eric A. Jacobsen
Life of this patent
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Abstract
A method and apparatus for encoding/decoding information using low density parity check (LDPC) codewords of varying lengths. In one implementation, an encoder/decoder uses a parity check matrix having a size that corresponds to a length of information for each codeword. In one example, the size of the parity check matrix may be retrieved from multiple stored matrices having different sizes. In other examples, a mother code matrix may be dynamically adjusted by puncturing parity bits and/or deleting information bits. Other inventive embodiments and adaptations are also disclosed.
Claims22
A method of encoding information by a wireless communication device, comprising:
- encoding information into one or more variable length low density parity check (LDPC) codewords;
- identifying a length of the information to be sent with the one or more codewords;
- and
- transmitting the length of the information in a header of a data unit.
A method of decoding encoded information by a wireless communication device, comprising:
- receiving a data unit including one or more variable length low density parity check (LDPC) codewords from a network device;
- and
- decoding the one or more variable length LDPC codewords after decoding a length of the information from a header of the data unit.
A wireless communication device, comprising:
- a low density parity check (LDPC) encoder configured to encode information into varying length low density parity check (LDPC) codewords using different sized parity check matrices by identifying a length of the information to be sent with the one or more codewords;
- and
- a transmitter to transmit the length of the information in a header of a data unit.
A wireless communication system comprising:
- a mobile unit including, a radio frequency (RF) transceiver, an encoder communicatively coupled to the RF transceiver and adapted to encode information into one or more variable length low density parity check (LDPC) codewords and a medium access controller to generate a medium access control service data unit (MSDU), wherein the MSDU includes a length of information field.
Dependencies are inferred from the claim text.