A blind spatial-temporal adaptive equalizer with array antenna using second order statistics

Abstract

It is known that signal processing with TDL (tapped-delay-line) spatial-temporal array antennas improve communication quality since they can suppress simultaneously undesired signals with space domain processing and ISI with time domain processing. However, conventional array antennas require training sequences to update tap coefficients. Such methods have to waste a fraction of the transmission time to transmit training sequences. In this paper., we propose a novel spatial-temporal blind array antenna using second order statistics, which does not need training sequences. The proposed algorithm can be applied to the environment in which one transmitter with narrow band signal and white noise or broadband signal exist over the channel. Some computer simulations are shown to verify the effectiveness of the proposed method.