Pilot design of MIMO-OFDM with beamforming

Authors:
Gunther Auer;Ivan Cosovic
Affiliations:
DOCOMO Euro-Labs, Munich, Germany;DOCOMO Euro-Labs, Munich, Germany
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

Citing 6
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Abstract

Reference symbols (pilots) support coherent detection, but add overhead and consume transmit power. A sophisticated pilot design needs to trade-off the attainable channel estimation accuracy with the induced losses in bandwidth & power efficiency. MIMO transmission, transmit beamforming, and spatial multiplexing further complicate pilot design. In this paper a unified analytical framework is developed to evaluate the attainable spectral efficiency of different pilot types for MIMO-OFDM employing fixed transmit beamforming.