Patent ID: 7693235

Claim:
An encoder system, comprising: a first outer encoder configured to encode a first portion of an input sequence of bits to produce first outer encoded bits; a second outer encoder configured to encode a second portion of the input sequence of bits to produce second outer encoded bits; a signal mapping unit configured to generate an I sequence of waveforms and a Q sequence of waveforms based on a sequence of control values, wherein the waveforms of the I and Q waveform sequences are waveforms allowed by Feher-Patented Quadrature Phase Shift Keying (FQPSK) modulation; a first means for recursively encoding an interleaved version of the first outer encoded bits and recursively encoding an interleaved version of the second outer encoded bits in order to generate the sequence control of values in a manner that ensures continuity of the I and Q waveform sequences generated by the signal mapping unit; wherein the encoder system is configured to generate a transmit signal from the I and Q waveform sequences and transmit the transmit signal onto a channel.