Title :
Pilot Design of MIMO-OFDM with Beamforming
Author :
Auer, Gunther ; Cosovic, Ivan
Author_Institution :
DOCOMO Euro-Labs., Munich, Germany
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.
Keywords :
MIMO communication; OFDM modulation; array signal processing; channel estimation; signal detection; space division multiplexing; MIMO-OFDM transmission; bandwidth efficiency; channel estimation; coherent detection; fixed transmit beamforming; power efficiency; spatial multiplexing; spectral efficiency; Array signal processing; Bandwidth; Base stations; Channel estimation; Communications Society; Interpolation; MIMO; OFDM; Time frequency analysis; Transmitting antennas;
Conference_Titel :
Communications, 2009. ICC '09. IEEE International Conference on
Conference_Location :
Dresden
Print_ISBN :
978-1-4244-3435-0
Electronic_ISBN :
1938-1883
DOI :
10.1109/ICC.2009.5199339
