Antenna subset selection for cyclic prefix assisted MIMO wireless communications over frequency selective channels

Authors:
A. Wilzeck;T. Kaiser
Affiliations:
Institute of Communications Technology, Leibniz University of Hannover, Hannover, Germany;mimoOn GmbH, Technology Center of Duisburg, Duisburg, Germany
Venue:
EURASIP Journal on Advances in Signal Processing
Year:
2008

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Abstract

Antenna (subset) selection techniques are feasible to reduce the hardware complexity of multiple-input multiple-output (MIMO) systems, while keeping the benefits of higher-order MIMO systems. Many studies of antenna selection schemes are based on frequency-flat channel models, which are inconsistent to broadband MIMO systems employing spatial-multiplexing. In broadband MIMO systems aiming to provide high-data-rate links, the employed signal bandwidth is typically larger than the coherence bandwidth of the channel so that the channel will be of frequency selective nature. Within this contribution we provide an overview on joint transmitter-and receiver-side antenna subset selection methods for frequency selective channels and deploy them in MIMO orthogonal frequency division multiplexing (OFDM) systems and MIMO single-carrier (SC) systems employing frequency domain equalization (FDE).