Patent ID: 7562280
Filing Date: 2009-07-14
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 (MIMO) schema, comprising: a) defining a base LDPC code, having a length equal to an integer number of data carriers in an ODFM symbol; b) transmitting the base LDPC code over a plurality of sub-carriers, wherein the base 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 on sub-carriers other 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.