Title :
3-Dimensional MMSE Channel Estimation in Multi-antenna OFDM Systems
Author :
Kim, Soo-Kwan ; Lee, Yong-Hwan
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., Seoul
fDate :
June 29 2008-July 5 2008
Abstract :
In this paper, we propose a three-dimensional (3-D) channel estimation (CE) scheme to reduce the mean square error (MSE) in multi-antenna orthogonal frequency division multiplexing (OFDM) systems. Exploiting the channel correlation in the spatial domain as well as in the frequency and time domain, the proposed 3-D CE scheme can outperform conventional two-dimensional (2-D) CE schemes, by either reducing the MSE with the same complexity or providing the same MSE performance with less complexity. Simulation results show that the proposed scheme is quite effective in the presence of spatial correlation.
Keywords :
OFDM modulation; antenna arrays; channel estimation; mean square error methods; 3D MMSE channel estimation; channel correlation; complexity; mean square error; multiantenna OFDM systems; spatial correlation; spatial domain; AWGN; Channel estimation; Computational complexity; Fading; Frequency domain analysis; Frequency estimation; Mean square error methods; OFDM; Receiving antennas; Transmitting antennas; MMSE; OFDM; channel estimation;
Conference_Titel :
Digital Telecommunications, 2008. ICDT '08. The Third International Conference on
Conference_Location :
Bucharest
Print_ISBN :
978-0-7695-3188-5
Electronic_ISBN :
978-0-7695-3188-5
DOI :
10.1109/ICDT.2008.31
