Title :
Systematic design of space-time codes employing multiple trellis coded modulation
Author :
Lin, Xiaotong ; Blum, Rick S.
Author_Institution :
Dept. of Comput. Sci. & Electr. Eng., Lehigh Univ., Bethlehem, PA, USA
fDate :
4/1/2002 12:00:00 AM
Abstract :
The design of space-time (ST) codes employing multiple trellis coded modulation (MTCM) is considered. This structure is shown to be necessary for achieving maximum transmit diversity gain when using trellis codes with parallel paths. Systematic code search procedures with low complexity are described based on the properties of ST-MTCM codes. It is illustrated that, if the trellis branches are properly labeled, the overall coding gain can be made larger than that achieved by conventional ST codes with the same transmission rate and the same number of states
Keywords :
codes; diversity reception; trellis coded modulation; trellis codes; MTCM; ST-MTCM codes; coding gain; maximum transmit diversity gain; multiple trellis coded modulation; space-time codes; systematic code search; systematic design; transmission rate; trellis branches; trellis codes; Code standards; Convolutional codes; Diversity methods; Error correction codes; Fading; Labeling; Modulation coding; Signal design; Space time codes; Transmitting antennas;
Journal_Title :
Communications, IEEE Transactions on
