Algorithmic Exploration and Implementation of a MIMO-OFDM Equalizer

作者：Sarrigeorgidis Konstantinos^*; Ma Yong

来源：Journal of Signal Processing Systems for Signal Image and Video Technology, 2010, 61(2): 141-156.

DOI：10.1007/s11265-009-0411-y

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

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 4x4 MIMO OFDM. A 2x3 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).

• 出版日期2010-11