Title :
Construction of M-QAM STCC Based on QPSK STCC
Author :
Rouchy, Christophe ; Sadjadpour, Hamid R.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Cruz, CA
Abstract :
Space-time convolutional code (STCC) is a technique that combines transmit diversity and coding to improve reliability in wireless fading channels. In this paper, we demonstrate a technique to design MQAM STCCs with high spectral efficiencies utilizing QPSK STCC as component code. The approach is based on a unique construction of M-QAM signal from several QPSK signals. The upper bound on the pairwise block error probability of the new scheme is derived. Simulation result demonstrates that the new technique outperforms existing M-QAM STCC design for M = 16
Keywords :
channel coding; convolutional codes; diversity reception; error statistics; fading channels; modulation coding; quadrature amplitude modulation; quadrature phase shift keying; space-time codes; M-QAM STCC; QPSK STCC; pairwise block error probability; space-time convolutional code; transmit diversity; wireless fading channels; Convolutional codes; Diversity reception; Error probability; Fading; Quadrature phase shift keying; Receiving antennas; Space time codes; Transmitters; Transmitting antennas; Upper bound;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1660933
