Blind multi-user receiver for MIMO-OFDM systems

Author

Abrudan, T.A. ; Sirbu, Marius ; Koivunen, Visa

Author_Institution

Signal Process. Lab., Helsinki Univ. of Technol., Espoo, Finland

fYear

2003

fDate

15-18 June 2003

Firstpage

363

Lastpage

367

Abstract

This paper addresses the problem of blind multiuser equalization for OFDM. A vector constant modulus algorithm (VCMA) is developed for a specific multiple input-multiple output (MIMO) system. The proposed algorithm relies on a combined criterion, to cancel both intersymbol interference (ISI) and interuser interference (IUI). ISI is minimized by using a constant mean block energy criterion, while IUI is reduced by using a decorrelation criterion. Reliable performance is achieved with relatively fast convergence and small steady-state error, as well as low computational complexity.

Keywords

MIMO systems; OFDM modulation; adjacent channel interference; blind equalisers; convergence of numerical methods; decorrelation; interference suppression; intersymbol interference; multiuser detection; radio receivers; ISI; IUI; MIMO-OFDM systems; blind multiuser equalization; computational complexity; constant mean block energy criterion; convergence; decorrelation criterion; interference cancellation; intersymbol interference; interuser interference; multiple input-multiple output system; reliable performance; steady-state error; vector constant modulus algorithm; Blind equalizers; Convergence; Decorrelation; Delay; Intersymbol interference; Laboratories; MIMO; OFDM modulation; Receiving antennas; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on

Print_ISBN

0-7803-7858-X

Type

conf

DOI

10.1109/SPAWC.2003.1318983

Filename

1318983