Patent ID: 7095707
Filing Date: 2006-08-22
Classification: H03M,H04B,H04H,H04J,H04L,H04N,H04W

Abstract:
1. A Trellis encoder for encoding payload data bits with redundant bits and mapping the resulting bits into a constellation point, comprising: a plurality of payload data inputs for receiving a plurality of payload bits; a convolutional encoder having a plurality of inputs coupled directly to a plurality of said payload data inputs and a first output and a second output; a separate exclusive OR gate having an input coupled to one of said payload data inputs and having an input coupled to said first output of said convolutional encoder and having an output; a mapper having a plurality of inputs coupled directly to a plurality of said payload data inputs, and having an input coupled to said second output of said convolutional encoder, and having an input coupled to said output of said exclusive OR gate, and having a plurality of I outputs and a plurality of Q outputs at which signals appear which are constellation points in a quadrature amplitude modulated constellation which are derived from said payload data appearing at said payload data inputs.