Patent ID: 8363747
Filing Date: 2013-01-29
Classification: H03M,H04L

Abstract:
1. A method for encoding at a source a message m using an encoding apparatus, the method comprising: performing, using the encoding apparatus, a first low-density parity check (LDPC) channel encoding on a first portion m performing, using the encoding apparatus, a second LDPC channel encoding on a second portion m converting the first encoded data into a first stream of N-PSK constellation points, wherein N is greater than one; converting the second encoded data into a second stream of N-PSK constellation points; generating, at the source, a first output signal, for transmission to a relay and a destination in a first interval, based on the first stream on N-PSK constellation points; generating, at the source, a second output signal, for transmission to the destination in a second interval, based on the second stream of N-PSK constellation points, wherein the second interval is configured to prevent the relay from hearing the second output signal.