[Architecture reconfigurable pour les systèmes MIMO à base d'opérateurs CORDIC]
Le système MIMO est une technologie attractive pour les systèmes 3G/4G sans fil. Dans cet article nous proposons l'implémentation sur FPGA d'un algorithme MIMO « V-BLAST Square Root » basée sur l'utilisation d'un nombre variable d'opérateurs CORDIC. L'opérateur CORDIC convient bien pour l'implémentions car il s'appuie seulement sur de simples techniques d'additions et de décalages entre vecteurs. Cette architecture de l'algorithme square root est reconfigurable pour s'adapter à différent nombre d'antennes et différent débit. L'architecture proposée peut atteindre un débit de 600 Mbit/s dans un circuit FPGA VirtexII de Xilinx pour le système MIMO avec une modulation QPSK.
The MIMO system is an attractive technology for wireless 3G/4G systems. In this article we propose the realization on FPGA of a MIMO ‘V-BLAST Square Root’ algorithm based on a variable number of CORDIC operators. The CORDIC operator is highly suitable for this implementation as it only relies on simple techniques of addition and vector offsets. This square root algorithm architecture is reconfigurable in order to adapt itself to different numbers of antennas and different data rates. The proposed architecture can achieve a data rate of 600 Mbit/s in a Virtex-II FPGA circuit from Xilinx for the MIMO system with QPSK modulation.
Mot clés : MIMO, V-BLAST Square Root, CORDIC, Architecture configurable
Hongzhi Wang 1 ; Pierre Leray 1 ; Jacques Palicot 1
@article{CRPHYS_2006__7_7_735_0,
author = {Hongzhi Wang and Pierre Leray and Jacques Palicot},
title = {Reconfigurable architecture for {MIMO} systems based on {CORDIC} operators},
journal = {Comptes Rendus. Physique},
pages = {735--750},
publisher = {Elsevier},
volume = {7},
number = {7},
year = {2006},
doi = {10.1016/j.crhy.2006.07.018},
language = {en},
}
TY - JOUR AU - Hongzhi Wang AU - Pierre Leray AU - Jacques Palicot TI - Reconfigurable architecture for MIMO systems based on CORDIC operators JO - Comptes Rendus. Physique PY - 2006 SP - 735 EP - 750 VL - 7 IS - 7 PB - Elsevier DO - 10.1016/j.crhy.2006.07.018 LA - en ID - CRPHYS_2006__7_7_735_0 ER -
Hongzhi Wang; Pierre Leray; Jacques Palicot. Reconfigurable architecture for MIMO systems based on CORDIC operators. Comptes Rendus. Physique, Volume 7 (2006) no. 7, pp. 735-750. doi : 10.1016/j.crhy.2006.07.018. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.07.018/
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