ACCESS POINT (AP), USER STATION (STA) AND METHODS FOR VARIABLE LENGTH ENCODING AND FOR ITERATIVE DECODING
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United States of America Patent
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Issued Date -
Dec 29, 2016
app pub date -
Jun 25, 2015
filing date -
Jun 25, 2015
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Abstract
Embodiments of an access point (AP), user station (STA), and method for variable length encoding are generally described herein. The AP may encode a block of input bits according to a parity check matrix to produce a low density parity check (LDPC) codeword. The parity check matrix may be included in a group of candidate parity check matrixes that includes a base parity check matrix and an expanded parity check matrix. An LDPC codeword length may be smaller for the base parity check matrix than for the expanded parity check matrix. The base parity check matrix may be used for the encoding when the LDPC codeword is transmitted for a legacy user station (STA). The expanded parity check matrix may be used when the LDPC codeword is transmitted for a non-legacy STA.
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