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

fYear

2012

Firstpage

123

Lastpage

127

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications (IST), 2012 Sixth International Symposium on

Conference_Location

Tehran

Print_ISBN

978-1-4673-2072-6

Type

conf

DOI

10.1109/ISTEL.2012.6482969

Filename

6482969