Abstract
This paper proposes improved space-time multiple TCM (ST-MTCM) codes via a systematic expansion of space- time block code (STBC) for two transmit antennas. Starting from the orthogonal STBC, the STBC set is expanded into super- orthogonal STBC, and further expanded up to spatial multiplexing in the case of BPSK and QPSK constellations. Exploiting the expanded set of STBCs as the number of states increase, improved full diversity ST-MTCM codes can be designed by increasing the coding gain and Euclidean distance of the pairwise errors.
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