Patent ID: 7603612

Claim:
A method of communicating data which comprises: transmitting data over a communications channel by generating a waveform that uses a serial concatenation of a convolutional code, a recursive inner rate one code and coherent modulation and by adding a preamble and mini-probe sequence selected from pseudo-random sequences during modulation to aid in removing correlation of multipath fading channels on consecutive bits; and receiving the communications signal and iteratively decoding the recursive inner rate one code and convolutional code in a turbo fashion to obtain the data by equalizing the received communications signal within an equalizer followed by interleaving within an inner deinterleaver and decoding within a rate one decoder and feeding back a portion of the signal from the rate one decoder to an inner interleaver and back into the equalizer and followed by outer deinterleaving and decoding in an outer forward error correction (FEC) decoder and feeding back a portion of the signal from the FEC decoder to the rate one decoder such that any inner rate one code and outer convolutional code are iteratively decoded in turbo fashion and equalization is redone with iterations through the signal feedback with any latest demodulated symbol estimates resulting from the turbo process and continuing the turbo decoding process with improved equalizer estimates.