A New Beamforming Method for MIMO-OFDM Systems

Author

Ya, Li ; Zhang, Lina ; Zhang, Erlei

Author_Institution

Sch. of Comput. Sci., Henan Polytech. Univ., Jiaozuo

Volume

1

fYear

2008

fDate

27-30 May 2008

Firstpage

45

Lastpage

49

Abstract

Recently, the attentions of communication societies are paid to MIMO-OFDM systems. In this paper we propose a new beamforming method to the receive end of MIMO-OFDM systems. To make the method work with fewer known OFDM symbols, oversampling samples are employed and multistage decomposition based on orthogonality of sub-carriers of OFDM signal is used to formulate the beamforming weight vector for each sub-carrier according to least square criterion. Simulation results demonstrate that the proposed method is effective in the equalization of space-time sub-channels and the suppression of cochannel interference signals at each sub-carrier.

Keywords

MIMO communication; OFDM modulation; array signal processing; equalisers; MIMO-OFDM systems; beamforming method; channel equalization; cochannel interference suppression; least square criterion; multi-input-multi-output systems; orthogonal frequency-division multi-plexing; oversampling; space-time sub-channels; Array signal processing; Bandwidth; Communications Society; Computer science; Fading; Interchannel interference; Intersymbol interference; OFDM modulation; Signal Processing Society; Time domain analysis; Beamforming; MIMO-OFDM; Multistage decomposition;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Signal Processing, 2008. CISP '08. Congress on

Conference_Location

Sanya, Hainan

Print_ISBN

978-0-7695-3119-9

Type

conf

DOI

10.1109/CISP.2008.549

Filename

4566116