Title :
An optimum Geometric decoder for MIMO systems
Author :
Shao, Z.Y. ; Cheung, S.W. ; Yuk, T.I.
Author_Institution :
Univ. of Hong Kong, Hong Kong, China
Abstract :
In this paper, we propose a simple implementation of an optimum Geometric decoder (GD) for use in MIMO systems. The decoder uses the channel matrix to construct a hyper paraboloid and then restricts the symbol vectors to be searched to a hyper ellipsoid projected from the hyper paraboloid. Computer simulation results on 4×4 different MIMO systems transmitting 16QAM and 64QAM show that the proposed GD can achieve the same bit-error-rate (BER) performances as those of the Maximum Likelihood (ML) decoder, yet having much less complexity.
Keywords :
MIMO systems; maximum likelihood decoding; quadrature amplitude modulation; 16QAM; 64QAM; MIMO systems; bit error rate; channel matrix; hyper ellipsoid; hyper paraboloid; maximum likelihood decoder; optimum geometric decoder; Complexity theory; Ellipsoids; Fading; Lattices; MIMO; Maximum likelihood decoding; MIMO systems; decoding complexity; geometric decoding; maximum likelihood decoding;
Conference_Titel :
GCC Conference & Exhibition, 2009 5th IEEE
Conference_Location :
Kuwait City
Print_ISBN :
978-1-4244-3885-3
DOI :
10.1109/IEEEGCC.2009.5734289
