Low-Complexity Subband Digital Predistortion for Spurious Emission Suppression in Noncontiguous Spectrum Access

Prototype Implementation of Two Efficient Low-Complexity Digital Predistortion Algorithms

Predistortion (PD) lineariser for microwave power amplifiers (PAs) is an important topic of research. With larger and larger bandwidth as it appears today in modern WiMax standards as well as in multichannel base stations for 3GPP standards, the relatively simple nonlinear effect of a PA becomes a complex memory-including function, severely distorting the output signal. In this contribution, tw...

Kalman Filter Algorithm for Adaptive Digital Predistortion

This paper introduces a recursive algorithm of Kalman filter for digital predistorter parameters extraction based on memory polynomials predistorter model. The predistorter model is firstly formulated as linear regression expression. Then we derive the state-space equation of the model and attain the steps of the algorithm. Finally, the accuracy and stability of the algorithm is proved by simul...

Digital Electronic Predistortion for Optical Communications

GCMAC-based predistortion for digital modulations

The subject of this paper is the compensation for nonlinearities in digital communication systems by means of predistortion. In this work, we apply the Generalized Cerebellar Model Articulation Controller (GCMAC) to simplify and accelerate the predistorter convergence. The range of analyzed predistorters includes: 1) a symbol-rate data predistorter that, for a given time span, achieves a simila...

Spurious Power Suppression Technique for Vlsi Architecture

Abstract Using spurious power suppression technique (SPST) in VLSI will reduce the power consumption of the system significantly. Here we are going to implement this design in Infinite Impulse Response (IIR) and Finite Impulse Response (FIR) filter architecture. When we are using this technique in this multipliers the no of partial products generated will be reduced to half which reduces the co...