Title :
A theoretical characterization and compensation of nonlinear distortion effects and performance analysis using polynomial model in MIMO OFDM systems under Rayleigh fading channel
Author :
Dakhli, Maha Cherif ; Zayani, R. ; Bouallegue, R.
Author_Institution :
Innov´Com Lab., Univ. of Carthage, Tunis, Tunisia
Abstract :
The nonlinearity of High Power Amplifiers (HPAs) has crucial effects on the performance of Multiple-Input Multiple-Output (MIMO). This paper analyzes a theoretical characterization of nonlinear distortion effects introduced HPA which is modeled as a nonlinear polynomial model in MIMO Output Orthogonal Frequency Division Multiplexing (OFDM) systems accompanied with Minimum Mean Square Error (MMSE) receiver. The aim of this work is to study the effect of nonlinearity on the capacity of systems and is to present an iterative estimation and compensation of the nonlinear distortion due to HPA in MIMO OFDM systems under Rayleigh fading channel. The numerical performance evaluation shows that the proposed method of compensation reduces significantly BER of MIMO OFDM systems.
Keywords :
MIMO communication; OFDM modulation; Rayleigh channels; error statistics; iterative methods; least mean squares methods; nonlinear distortion; polynomials; radio receivers; radiofrequency power amplifiers; BER; HPA; MIMO OFDM system; MMSE receiver; Rayleigh fading channel; high power amplifier; iterative estimation; minimum mean square error receiver; multiple-input multiple-output channel; nonlinear distortion compensation; nonlinear polynomial model; orthogonal frequency division multiplexing system; Channel capacity; Fading; MIMO; Nonlinear distortion; OFDM; Receivers; HPA; MIMO; MMSE; OFDM; nonlinear polynomial model;
Conference_Titel :
Computers and Communications (ISCC), 2013 IEEE Symposium on
Conference_Location :
Split
DOI :
10.1109/ISCC.2013.6755009
