Turbo Product Code with Continuous Phase Modulation

Abstract

A basic problem statement in aeronautical telemetry has been to develop communication systems with good detection efficiency coupled with good spectral efficiency. Shaped-offset quadrature phase shift keying (SOQPSK) is a spectrally more efficient form of continuous phase modulation (CPM) as opposed to pulse code modulation/frequency modulation (PCM/FM). With these modulation techniques, we propose concatenated turbo product code (TPC) with CPM as a solution to our above problem statement. The performance of this turbo product coded CPM (TPC-CPM) system is simulated under coherent and non-coherent demodulation. Finally we present simulation results showing impressive coding gain performance of TPC-CPM over the AWGN channel.