Title :
Iterative lattice reduction aided MMSE list detection in MIMO system
Author :
Shimokawa, Tetsuyoshi ; Fujino, Tadashi
Author_Institution :
Univ. of Electro-Commun., Chofu
Abstract :
This paper proposes a novel lattice-reduction aided (LRA) detection in MIMO systems by improving the LRA-MMSE detection. The proposed detection scheme makes five transform matrices by iteratively reducing the columns of the channel matrix. Using the five transform matrices, five estimates of the transmitted signal are created, among which the most reliable estimate is chosen. The transmit signal energy is saved about 7dB at BER=10-5, and the BER slope became much steeper, which is almost the same as that with the ML detection in the 8times8 MIMO system.
Keywords :
MIMO communication; iterative methods; least mean squares methods; matrix algebra; signal detection; BER slope; MIMO system; ML detection; bit error rate; channel matrix; iterative lattice reduction aided MMSE list detection; maximum likelihood detection; minimum mean square error methods; multiple-input multiple-output system; transform matrices; transmit signal energy; Additive noise; Bit error rate; Communications technology; Detectors; Gaussian processes; Lattices; MIMO; Maximum likelihood detection; Scattering; Transmitting antennas;
Conference_Titel :
Advanced Technologies for Communications, 2008. ATC 2008. International Conference on
Conference_Location :
Hanoi
Print_ISBN :
978-1-4244-2680-5
Electronic_ISBN :
978-1-4244-2681-2
DOI :
10.1109/ATC.2008.4760516
