Novel adaptive blind-equalizer-order selection scheme for multiple-input multiple-output channels

Authors:
Kun Yan;Hsiao-Chun Wu;Shih Yu Chang;Yiyan Wu
Affiliations:
Electrical and Computer Engineering Department, Louisiana State University, Baton Rouge, Louisiana;Electrical and Computer Engineering Department, Louisiana State University, Baton Rouge, Louisiana;Electrical and Computer Engineering Department, Louisiana State University, Baton Rouge, Louisiana;Electrical and Computer Engineering Department, Louisiana State University, Baton Rouge, Louisiana
Venue:
RWS'10 Proceedings of the 2010 IEEE conference on Radio and wireless symposium
Year:
2010

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Abstract

This paper introduces a novel adaptive finiteimpulse-response (FIR) equalizer-order selection scheme for multiple-input multiple-output (MIMO) channels. The model-order selection for blind FIR equalizers is determined heuristically but hardly on any theoretical basis. However, this heuristical strategy would often lead to a suboptimal solution. Thus, we design a non-pilot-aided MIMO channellength estimation scheme and propose a new blind-equalizerorder determination scheme built on such an adaptive channel-length estimation method. Our simulations show that the proposed scheme greatly outperforms the conventional systems using the fixed heuristical model-order selection technique.