Title :
Low-Complexity Ordered Successive Detection for Group Layered Space-Time MIMO System
Author :
Nagao, Yuhei ; Kurosaki, Masayuki ; Ochi, Hiroshi
Author_Institution :
Dept. of Comput. Sci. & Electron. Eng., Kyushu Inst. of Technol., Fukuoka
Abstract :
Group layered space-time can attain a better tradeoff between data rate and diversity gain. For the GLST, in this paper we propose a new generalized detection algorithm that is an ordered successive detection employing an extended Gaussian elimination algorithm. The algorithm can reduce computational complexity, as low as O(Nt2Nr) per symbol interval, by using the characteristics of the channel matrix. Nt and Nr are the number of transmitter and receiver antennas, respectively. Simulation results show that the proposed detector can achieve low-complexity and better performance over linear MMSE ones. In addition, the effect of spatial correlation in GLST systems is discussed from the BER performance
Keywords :
Gaussian processes; MIMO communication; computational complexity; diversity reception; error statistics; least mean squares methods; matrix algebra; space-time codes; BER performance; MMSE; channel matrix; computational complexity reduction; diversity gain; extended Gaussian elimination algorithm; generalized detection algorithm; group layered space-time MIMO system; low-complexity ordered successive detection; receiver antennas; transmitter antennas; Bit error rate; Computational complexity; Computational modeling; Detection algorithms; Detectors; Diversity methods; MIMO; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Intelligent Signal Processing and Communications, 2006. ISPACS '06. International Symposium on
Conference_Location :
Yonago
Print_ISBN :
0-7803-9732-0
Electronic_ISBN :
0-7803-9733-9
DOI :
10.1109/ISPACS.2006.364905
