Title :
Space-time codes with AM-PSK constellations
Author_Institution :
Dept. of Commun. Eng., Nat. Chung-Cheng Univ., Chia-Yi
Abstract :
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 multiradii 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
Keywords :
MIMO systems; amplitude modulation; antenna arrays; diversity reception; modulation coding; phase shift keying; space-time codes; AM-PSK constellation; MIMO; ST; amplitude modulation; diversity gain advantage; maximal rank distance code; multiple antenna; multiple input multiple output; multiradii construction; peak-to-average power ratio; phase-shift keying; space-time code; Amplitude modulation; Constellation diagram; Diversity methods; MIMO; Modular construction; Modulation coding; Peak to average power ratio; Phase shift keying; Signal mapping; Symmetric matrices; 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;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2005.858982
