Based on OFDM system, a novel space-frequency-time code which combined trellis-coded modulation with differential space-time block code was proposed.

As an example, we calculate the Euclidean distance spectrum of error paths under viterbi decoding and BER upper bound for four-state Trellis-coded 8 PSK.

A data aided symbol timing estimation algorithm was proposed for burst-mode space-time trellis coded multi-level continuous phase modulation (STTC-MCPM) systems in Rayleigh fading channels.