Error probability of coherent detection for trellis-coded partial response CPM on Rician fading channels

Abstract

A coherent receiver for interleaved partial response trellis coded continuous phase modulation (TC-CPM) is derived. A true upper bound on the bit error probability for flat fading channels is derived, by showing that TC-CPM is equivalent to a TCM scheme. The upper bound is evaluated by defining an error-state diagram along with a set of characteristic distances, and then applying transfer function bounding techniques. Comparison with simulation results shows that the upper bound is tight to within 1.5-2 dB.