  The Golden space-time trellis coded modulation (GST-TCM) scheme was proposed
in \cite{Hong06} for a high rate $2\times 2$ multiple-input multiple-output
(MIMO) system over slow fading channels. In this letter, we present the
performance analysis of GST-TCM over block fading channels, where the channel
matrix is constant over a fraction of the codeword length and varies from one
fraction to another, independently. In practice, it is not useful to design
such codes for specific block fading channel parameters and a robust solution
is preferable. We then show both analytically and by simulation that the
GST-TCM designed for slow fading channels are indeed robust to all block fading
channel conditions.
