A pre-FFT OFDM adaptive antenna array with Eigenvector Combining

Abstract

This paper proposes a novel pre-FFT type OFDM adaptive array antenna called "Eigenvector Combining". The eigenvector combining is a realization of a post-FFT type OFDM adaptive array antenna through a pre-FFT signal processing, so it can achieve excellent performance with less computational complexity and shorter training symbols. Numerical results demonstrate that the proposed eigenvector combining shows excellent bit error rate performance close to the lower bound just with two training symbols.