Journal of Signal Processing Systems

, Volume 61, Issue 2, pp 141–156 | Cite as

Algorithmic Exploration and Implementation of a MIMO-OFDM Equalizer

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Abstract

In this paper we explore algorithms and architectures for the implementation of a MIMO OFDM Equalizer for high speed wireless communications. The algorithmic exploration is based on matrix computations and factorizations. A scalable computational methodology and architecture is proposed for the implementation of a 4×4 MIMO OFDM. A 2×3 Equalizer supporting Maximum Ratio Combining and Zero Forcing equalization for 20/40 MHz 64-QAM OFDM modulation has been implemented in 150 nm technology. The Equalizer area is 133k gates and the maximum throughput achieved is 480Mbits/s. The system described in this paper is compliant with the latest IEEE standard for MIMO wireless communications (802.11n)

Keywords

Wireless communications MIMO-OFDM Equalizers for communication systems Zero Forcing Equalization QR decomposition Matrix factorizations Givens rotations CORDIC arithmetic 
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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Santa ClaraUSA

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