Pilot Aided 3D Channel Estimation for MIMO-OFDM Systems

Author

Xiaodan He ; Jianhua Zhang ; Wei Bao

Author_Institution

Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2013

fDate

2-5 June 2013

Firstpage

1

Lastpage

5

Abstract

Considering three dimensional (3D) channel with elevation effect, this paper addresses pilot spacing design in frequency, time and spatial domains for orthogonal frequency division multiplexing (OFDM) systems with multiple antennas. Employing the channel spatial correlation between transmit antennas, pilot overhead can be reduced substantially without estimation accuracy loss. On the other hand, the accuracy of pilot aided channel estimation (PACE) can be improved. This paper also verifies the performance of cascaded lower-dimensional Wiener filters in mean square error (MSE) sense. Numerical results show that the channel estimation in frequency-space domain is undecomposable.

Keywords

MIMO communication; OFDM modulation; Wiener filters; antenna arrays; channel estimation; correlation methods; frequency-domain analysis; mean square error methods; time-domain analysis; transmitting antennas; MIMO-OFDM systems; MSE; PACE; cascaded lower-dimensional Wiener filters; channel spatial correlation; elevation effect; frequency domains; frequency-space domain; mean square error; multiple antennas; orthogonal frequency division multiplexing systems; pilot aided 3D channel estimation; pilot overhead; pilot spacing design; spatial domains; time domains; transmit antennas; Channel estimation; Estimation; OFDM; Three-dimensional displays; Time-frequency analysis; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2013 IEEE 77th

Conference_Location

Dresden

ISSN

1550-2252

Type

conf

DOI

10.1109/VTCSpring.2013.6692713

Filename

6692713