Blind Channel Estimation of MIMO-OFDM Based on FDPM

Author

Wang, Gang ; Zhu, Ming ; Cai, Hua

Author_Institution

Changchun Inst. of Opt., Fine Mech. & Phys, Chinese Acad. of Sci., Changchun, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

Subspace based methods have been widely discussed in multichannel estimation including MIMO-OFDM system. However, direct subspace methods suffer from heavy computation complexity of O(N³). In this paper, a new subspace tracking technique called fast data projection method (FDPM) is proposed for adaptively tracking the noise subspace. The new algorithm has low complexity of O(NL) and is the only numerically stable, low complexity algorithm for tracking subspaces corresponding to the smallest singular values. Simulation results show that the proposed scheme has similar performance to the original.

Keywords

MIMO communication; OFDM modulation; adaptive signal processing; channel estimation; computational complexity; singular value decomposition; tracking; wireless channels; FDPM; MIMO-OFDM system; adaptive tracking; blind channel estimation; computation complexity; fast data projection method; multichannel estimation; noise subspace; singular value decomposition; subspace tracking technique; Baseband; Blind equalizers; Educational institutions; Eigenvalues and eigenfunctions; Matrix decomposition; OFDM; Physics; Receiving antennas; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5302695

Filename

5302695