Patent ID: 8644282
Filing Date: 2014-02-04
Classification: H04L

Abstract:
1. A method for low density parity check (LDPC) encoding, comprising: at a transmitting device, based on a number of information bits to be delivered in a packet, determining an initial number of orthogonal frequency division multiplexing (OFDM) symbols; determining a space time block coding (STBC) value; and determining a number of extra symbols value based on said initial number of OFDM symbols, wherein a final number of OFDM symbols is based on said initial number of OFDM symbols and said number of extra symbols value; generating an LDPC extension value based on said STBC value and said number of extra symbols value for purposes of determining LDPC parameters associated with said packet; encoding said LDPC extension value in a header of said packet, wherein when said STBC value is 0 and said number of extra symbols value is 0, then said LDPC extension value is 0; wherein when said STBC value is 0 and said number of extra symbols value is 1, then said LDPC extension value is 1; wherein when said STBC value is 1 and said number of extra symbols value is 0, then said LDPC extension value is 0; and wherein when said STBC value is 1 and said number of extra symbols value is 2, then said LDPC extension value is 1; at a receiving device, when said LDPC extension value is 1, determining said number of extra symbols value is 1 when said STBC value is 0; and determining said number of extra symbols value is 2 when said STBC value is 1.