Title :
Constellation Expansion Free Quasi-Orthogonal Space-Time Block Codes on Square Lattice Constellations with Full Diversity and High Coding Gains
Author :
Chen, Ming-Yang ; Pei, Soo-Chang ; Su, Hsuan-Jung
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei
Abstract :
This article presents a set of quasi-orthogonal space-time block codes for four transmit antennas that achieves full diversity and high coding gain whenever a square lattice constellation is adopted. From the simulation results, the new designs perform very closely to quasi-orthogonal codes with constellation rotations. Without a search of the optimal rotation angle and any constellation expansion, our new codes yield an advantageous transmission scheme for QPSK and 16-QAM modulations
Keywords :
antenna arrays; block codes; diversity reception; quadrature amplitude modulation; quadrature phase shift keying; space-time codes; transmitting antennas; QAM modulations; QPSK; four transmit antennas; full diversity; quasi-orthogonal space-time block codes; square lattice constellations; Bit error rate; Block codes; Constellation diagram; Councils; Maximum likelihood decoding; Maximum likelihood detection; Modulation coding; Pulse modulation; Quadrature phase shift keying; Transmitting antennas;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on
Conference_Location :
Berlin
Print_ISBN :
9.7838007291e+012
DOI :
10.1109/PIMRC.2005.1651390
