Title :
Generally Dimensional and Constellation Expansion Free Space–Time Block Codes for QAM With Full Diversity
Author :
Ming-Yang Chen ; Chiang-Yu Chen ; Hua-Chieh Li ; Soo-Chang Pei ; Hsuan-Jung Su
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei
Abstract :
This correspondence presents new rate-1 space-time block codes (STBCs) attending full diversity over every quadrature amplitude modulation (QAM) constellation when the number of Tx antennas is a power of two. From the simulation results, our design performs very closely to the quasi-orthogonal code with constellation rotation over 4-QAM and 16-QAM in the case of four Tx antennas over quasi-static Rayleigh fading channels. Moreover, the proposed codes would not cause any constellation expansion over QAM symbols in contrast with the quasi-orthogonal codes with constellation rotations
Keywords :
Rayleigh channels; block codes; diversity reception; modulation coding; quadrature amplitude modulation; space-time codes; transmitting antennas; QAM constellation; STBC; Tx antennas; diversity; free space-time block codes; quadrature amplitude modulation; quasiorthogonal code; quasistatic Rayleigh fading channel; Bit error rate; Block codes; Fading; MIMO; Maximum likelihood detection; Mobile communication; Quadrature amplitude modulation; Quadrature phase shift keying; Quaternions; Transmitting antennas; Algebraic codes; generalized quaternion groups; representations of finite groups; space–time block codes (STBCs); transmit diversity;
Journal_Title :
Information Theory, IEEE Transactions on
DOI :
10.1109/TIT.2006.889023
