Iterative Semi-blind Beamforming Algorithm in MIMO-OFDM Systems

Author

Bokharaiee-Najafee, S. ; Zamiri-Jafarian, H.

Author_Institution

Ferdowsi Univ., Mashhad

fYear

2007

fDate

18-20 Nov. 2007

Firstpage

641

Lastpage

645

Abstract

A new frequency domain semi-blind beamforming algorithm is proposed in this paper for multiple input multiple output (MIMO) systems in which orthogonal frequency division multiplexing (OFDM) technique is employed. Based on singular value decomposition (SVD) technique, the semi-blind beamforming algorithm eliminates space interference in an iterative manner by shaping antenna patterns in transmitter and receiver sides. The performance of the new algorithm is evaluated for a 16-QAM MIMO-OFDM system by computer simulations under different scenarios. The results show the superiority of the proposed algorithm in comparison with semi-blind subspace method.

Keywords

MIMO communication; OFDM modulation; singular value decomposition; MIMO-OFDM systems; iterative semiblind beamforming algorithm; multiple input multiple output systems; orthogonal frequency division multiplexing technique; singular value decomposition technique; Array signal processing; Frequency domain analysis; Interference elimination; Iterative algorithms; MIMO; OFDM; Receiving antennas; Singular value decomposition; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Innovations in Information Technology, 2007. IIT '07. 4th International Conference on

Conference_Location

Dubai

Print_ISBN

978-1-4244-1840-4

Electronic_ISBN

978-1-4244-1841-1

Type

conf

DOI

10.1109/IIT.2007.4430399

Filename

4430399