Compensation in frequency domain for HPA nonlinearity in MIMO OFDM systems using MMSE receiver

Author

Cherif Dakhli, Maha ; Zayani, R. ; Bouallegue, R.

Author_Institution

Innov´Com Lab., Univ. of Carthage, Tunis, Tunisia

Volume

2

fYear

2012

fDate

21-25 Oct. 2012

Firstpage

1273

Lastpage

1278

Abstract

This paper presents a compensating method based on Neural Network (NN) of Non-Linear (NL) distortion, which caused by High Power Amplifier (HPA) in Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO OFDM) systems. In this work, we present and we evaluate with simulation, the effect of nonlinearity on the system capacity and the performance of NN compensator in frequency domain accompanied with Minimum Mean Square Error (MMSE) receiver in a VBLAST (Vertical Bell Laboratories Layered Space-Time) MIMO OFDM systems running under a Rayleigh fading channel.

Keywords

MIMO communication; OFDM modulation; Rayleigh channels; compensation; frequency-domain analysis; least mean squares methods; neural chips; nonlinear distortion; power amplifiers; radio receivers; space-time codes; HPA nonlinearity; MMSE receiver; NL distortion; NN compensator; Rayleigh fading channel; VBLAST; compensation; frequency domain; high power amplifier; minimum mean square error; multiple-input multiple-output orthogonal frequency division multiplexing; neural network; nonlinear distortion; system capacity; vertical Bell Laboratories layered space-time MIMO OFDM system; HPA; MIMO; MLP; MMSE; NEURAL NETWORK; OFDM; VBLAST;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing (ICSP), 2012 IEEE 11th International Conference on

Conference_Location

Beijing

ISSN

2164-5221

Print_ISBN

978-1-4673-2196-9

Type

conf

DOI

10.1109/ICoSP.2012.6491808

Filename

6491808