Title :
3D Pilot Aided Channel Estimation
Author_Institution :
DOCOMO Euro-Labs., Munich
Abstract :
We address pilot aided channel estimation (PACE) for MIMO-OFDM operating in spatially correlated channels. Pilot symbols are only inserted on selected transmit antennas, and the channel response on the remaining transmit antennas is obtained by means of interpolation. By extending the principle of channel estimation by interpolation to the spatial domain, three dimensional (3D) PACE operates in time, frequency and space. Provided an appropriately dimensioned pilot grid, 3D-PACE is shown to substantially reduce the required pilot overhead without sacrificing channel estimation accuracy.
Keywords :
MIMO communication; OFDM modulation; channel estimation; transmitting antennas; MIMO-OFDM; channel estimation accuracy; pilot aided channel estimation; pilot symbols; spatially correlated channels; three-dimensional channel estimation; transmit antennas; Base stations; Channel estimation; Data communication; Delay; Internet; Mobile robots; Propagation losses; Robot control; Traffic control; Wireless application protocol;
Conference_Titel :
Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE
Conference_Location :
Budapest
Print_ISBN :
978-1-4244-2947-9
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2009.4917487
