Title :
A hybrid probabilistic data association-sphere decoding detector for multiple-input-multiple-output systems
Author :
Latsoudas, Georgios ; Sidiropoulos, Nicholas D.
Author_Institution :
Dept. of Electron. & Comput. Eng., Tech. Univ. of Crete, Chania-Crete, Greece
fDate :
4/1/2005 12:00:00 AM
Abstract :
A hybrid probabilistic data association (PDA)-sphere decoding (SD) algorithm is proposed for signal detection in multiple-input-multiple-output (MIMO) systems. The key idea is to reduce the dimension of the problem solved via SD by first running a single stage of the PDA to fix symbols that can be decoded with high reliability. Simulations under a multiple antenna Rayleigh fading scenario show that this two-step algorithm attains a considerably better performance-complexity tradeoff than SD and PDA for low to moderate signal-to-noise ratio (SNR) or higher problem dimensions.
Keywords :
MIMO systems; Rayleigh channels; antenna arrays; decoding; probability; signal detection; MIMO system; PDA-SD; SNR; association-sphere decoding detector; hybrid probabilistic data; integer least square; multiple antenna Rayleigh fading; multiple-input-multiple-output system; signal detection; signal-to-noise ratio; two-step algorithm; Detectors; Least squares methods; MIMO; Maximum likelihood decoding; Multiaccess communication; Personal digital assistants; Rayleigh channels; Signal detection; Signal processing algorithms; Signal to noise ratio; Integer least squares; multiple-input–multiple-output (MIMO) decoding; probabilistic data association (PDA); sphere decoder;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2005.843779
