Title :
Euclidean Distance Maximizing Rotations for Quasi-Orthogonal Space-Time Codes with MPSK Symbols
Author :
Sharma, Naresh ; Papadias, Constantinos B.
Author_Institution :
Tata Inst. of Fundamental Res., Mumbai
Abstract :
Most classes of quasi-orthogonal space-time codes proposed in the literature require the use of rotated constellations for the interfering symbols to ensure full diversity. Since there is no analytical result available to get the exact probability of error in terms of the rotation angle, the optimization of the rotation angle has been done with respect to the Euclidean distance or the diversity product criteria. This paper provides analytical expressions for the optimal rotation angles for the Euclidean distance criteria for any M-PSK (phase shift keying) constellation.
Keywords :
error statistics; matrix algebra; optimisation; phase shift keying; space-time codes; Euclidean distance maximizing rotations; MPSK symbols; diversity product criteria; error probability; interfering symbols; quasi-orthogonal space-time codes; rotated constellations; rotation angle optimization; Block codes; Euclidean distance; Fading; Gaussian noise; Information technology; Interference; Land mobile radio; Mobile communication; Phase shift keying; Space time codes;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394875
