Space-time codes with AM-PSK constellations

Francis Lu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


This correspondence presents a new signal mapper that maps the maximal rank distance codes to space-time (ST) codes with amplitude modulation phase-shift keying (AM-PSK) constellations. It is shown that this new mapper is rank-distance preserving. Comparing to the multi-radii construction proposed by Hammons, this new mapper has linear increase in the radii and the resulting signal constellations have larger minimum distance and lower peak-to-average power ratio. Variations of this new mapper are also given to provide ST codes with rotated AM-PSK constellations.

Original languageEnglish
Pages (from-to)4355-4358
Number of pages4
JournalIEEE Transactions on Information Theory
Issue number12
StatePublished - 1 Dec 2005


  • Amplitude modulation phase-shift keying (AM-PSK) constellation
  • Diversity gain advantage
  • Multiple antennas
  • Multiple input multiple output (MIMO)
  • Rate-diversity tradeoff
  • Space-time (ST) codes
  • Unified construction


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