Patent ID: 6968021
Filing Date: 2005-11-22
Classification: H04L

Abstract:
1. A bandwidth efficient advanced modulation waveform modem comprising concatenated convolutional coding, interleaving, and continuous phase modulation and having a modulator connected to a transmitter to transmit signals having coded information bits over a communications channel and a demodulator connected to a receiver to receive the signals over the communications channel said demodulator comprising: a multiplier for multiplying an input signal received from the receiver and having coded information bits and a carrier by a phase signal; a memoryless demodulator connected to the multiplier for demodulating the multiplied input signal; an iterative turbo decoder connected to the memoryless demodulator for decoding the multiplied input signal; and a carrier and time tracking loop for providing the phase signal to track the input carrier and for adjusting time tracking, wherein said carrier and time tracking loop further comprises: