Abstract: The scheme of asymmetric trellis-coded modulation concatenated with space-time block coding was proposed. The trellis graph was designed and the optimal constellation rotating angle was presented which based on the rule of maximize the minimum product-sum distance. Simulation results show that the proposed ATCM-STBC scheme outperforms TCM-STBC with no extra power and bandwidth efficiency whether under quasi-static fading channels or fast Rayleigh fading channels.

Key words: trellis-coded modulation, space–time block coding, constellation rotating