Title :
Low-complexity QRD-based detection scheme for full rate QOSTBC with four-transmit antenna
Author :
Towliat, M. ; Zamiri-Jafarian, Hossein
Author_Institution :
Ferdowsi Univ. of Mashhad, Mashhad, Iran
Abstract :
A new low-complexity Maximum Likelihood (ML) based detection scheme is presented in this paper for full-rate Quasi Orthogonal Space Time Block Code (QOSTBC) in Multi-Input Multi-Output (MIMO) systems with four-transmit antenna. The proposed detection scheme is developed by using both lower and upper triangular versions of QR decomposition of channel matrix, without need of utilizing interference cancellation (IC) method. Simulation results show that the symbol error rate performance of the new proposed detection scheme is the same as that of the QRD-IC-based detection method but with less complexity.
Keywords :
MIMO communication; communication complexity; error statistics; interference suppression; maximum likelihood detection; radiofrequency interference; space-time block codes; transmitting antennas; wireless channels; IC method; MIMO systems; QR decomposition; QRD-IC-based detection method; channel matrix; four-transmit antenna; full rate QOSTBC; full-rate quasiorthogonal space time block code; interference cancellation method; low-complexity ML-based detection scheme; low-complexity QRD-based detection scheme; low-complexity maximum likelihood-based detection scheme; lower triangular versions; multiinput multioutput systems; symbol error rate performance; upper triangular versions; Complexity theory; Error probability; MIMO; Quality of service; Receiving antennas; 4×4 QOSTBC; QR decomposition; low complexity ML detection;
Conference_Titel :
Telecommunications (IST), 2012 Sixth International Symposium on
Conference_Location :
Tehran
Print_ISBN :
978-1-4673-2072-6
DOI :
10.1109/ISTEL.2012.6482969
