Patent ID: 9203492
Filing Date: 2015-12-01
Classification: H03M,H04B,H04L

Abstract:
1. A method for implementing Low Density Parity Check (LDPC) codes in an IEEE 802.11 standard system configured to operate in a Multiple-Input, Multiple-Output schema, and encoding an input information stream with the LDPC codes, comprising: a) defining a base LDPC code, having a length equal to an integer multiple of a number of data carriers in an Orthogonal Frequency Division Multiplexing (OFDM) symbol; b) transmitting the base LDPC code in place of a space-time code over a plurality of sub-carriers, wherein the base LDPC code is transmitted at an expected phase on sub-carriers specified by the IEEE 802.11 standard system, and c) transmitting the base LDPC code in place of the space-time code on other sub-carriers than those specified by the IEEE 802.11 standard system, wherein the base LDPC code on the other sub-carriers is transmitted offset in phase from the base LDPC code on the specified sub-carriers.