EURASIP Journal on Applied Signal Processing
Volume 2002 (2002), Issue 3, Pages 236-248
doi:10.1155/S1110865702000641
Abstract
A design method for recursive space-time trellis codes and
parallel-concatenated space-time turbo coded modulation is proposed
that can be applied to an arbitrary existing space-time trellis code.
The method enables a large, systematic increase in coding gain while
preserving the maximum transmit diversity gain and bandwidth
efficiency property of the considered space-time trellis code.
Applying the above method to Tarokh et al. space-time trellis codes,
significant performance improvements can be obtained even with
extremely short input information frames. The application of
space-time turbo coded modulation to the space-frequency domain is
also proposed in this paper. Exploiting the bandwidth efficient
orthogonal frequency division modulation (OFDM), multiple
transmit antennas and large frequency selectivity offered by typical
low mobility indoor environments, the proposed space-frequency turbo
coded modulation performs within 2.5dB of the outage capacity for
a variety of practical wideband multiple-input multiple-output (MIMO)
radio channels.