Adaptive beamforming techniques for OFDM based WLAN systems: a comparison between RLS and LMS

Author

Sanz, úRad ; Corral, Pablo ; De Castro, Antonio Cézar Lima

Author_Institution

Signal Theor. & Commun., Univ. Miguel Hernandez, Spain

fYear

2004

fDate

24-26 Oct. 2004

Firstpage

29

Lastpage

32

Abstract

This work presents an study of different adaptive filter algorithms, RLS and LMS, applied in OFDM based WLAN systems. In the simulations, we use Hiperlan/2 standard. In a WLAN environment we can fin a desired signal, interfering signals and noise. In this kind of environment, we have used smart antennas in order to improve radiation diagram and signal/interference ratios. Finally, we compare results of RLS and LMS beamforming.

Keywords

OFDM modulation; adaptive antenna arrays; adaptive filters; antenna radiation patterns; array signal processing; interference (signal); least mean squares methods; telecommunication standards; wireless LAN; Hiperlan-2 standard; LMS; OFDM based WLAN system; RLS; adaptive beamforming technique; adaptive filter algorithm; least mean square; orthogonal frequency division multiplexing; radiation diagram; recursive least square; signal interference; smart antenna; wireless local area network; Adaptive arrays; Adaptive filters; Array signal processing; Finite impulse response filter; Least squares approximation; OFDM; Physical layer; Resonance light scattering; Wireless LAN; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Mobile Future, 2004 and the Symposium on Trends in Communications. SympoTIC '04. Joint IST Workshop on

Print_ISBN

0-7803-8556-X

Type

conf

DOI

10.1109/TIC.2004.1409491

Filename

1409491