on specific nonlinear mixtures known as post-nonlinear mixtures. These mixtures constituted by a linear instantaneous mixture (linear memoryless channel) followed by an unknown and invertible memoryless nonlinear distortion, are realistic models in many situations and emphasize interesting properties i

circuits. Since transistors are non-linear, this assumption is only valid for extremely small signals. Consider a class of memoryless non-linear amplifiers. A memoryless system can be described by an instantaneous input/output relation. In other words, the output at a given time only depends on

In this paper we study linear models for some nonlinear systems with random Gaussian input signals. The model consists of a linear deterministic gain plus an additive random distortion. The model is used for some typical nonlinearities in a digital communication link. The validity of the model

In this paper we investigate an alternative characterization of the inverse AM/AM and AM/PM transfer curves of a high power amplifier (HPA), defining an adaptive algorithm for the optimum adjustment of the coefficients in a memoryless rational-based model used to pre-distort a base band signal

Acoustic echo cancellers (AECs) in today's hands-free telephones rely on the assumption of a linear echo path. However, low-cost audio equipment or constraints of portable communication systems cause nonlinear distortions in the loudspeaker and its amplier, which limit the echo reduction

Abstract—In this paper, we address the problem of blind compensation of nonlinear distortions. Our approach relies on the assumption that the input signals are bandlimited. We then make use of the classical result that the output of a nonlinear memoryless system has a wider spectrum than the one

A lossy compression algorithm for binary redundant memoryless sources is presented. The proposed scheme is based on sparse graph codes. By introducing a nonlinear function, redundant memoryless sequences can be compressed. We propose a linear complexity compressor based on the extended belief

(OFDM) is vulnerable with respect to nonlinear distortions caused, for example, by a nonlinear high power amplifier. In the presence of nonlinear high power amplification, OFDM suffers from crosstalk between all subcarriers. Furthermore, the power density spectrum is significantly widened

distortion in the line. The novel element in the proposed complex multifunctional controller unit is the upper harmonic controller that minimizes the amplitudes of the 3rd and 5th upper harmonic component in the output voltage by using a version of the gradient method. The proposed controller has been

-trary memoryless distortion. Major distortion effects at the trans-mitter stage such as quantization and nonlinearity from the light emitting diode are analyzed. Four known orthogonal-frequency-division-multiplexing-based modulation schemes for optical com-munication are considered in this paper: direct