Authors: Changsoo Eun, Junsu Kwon
Addresses: Department of Information Communications Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon, Korea. ' Department of Information Communications Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon, Korea
Abstract: In wideband communication systems, memory effect manifests itself as inter-symbol interference, which combined with the non-linearity, complicates the non-linear compensation. We propose a digital feedforward linearisation method to compensate for the non-linearity of a power amplifier (PA) with memory. The PA is modelled with a Wiener model, which is a linear time-invariant system followed by a memoryless non-linear system. The advantage of the proposed scheme is that the compensation is implemented in baseband by using a digital signal processing technique. Simulation results are given to verify the validity of the proposed scheme.
Keywords: DSP; digital signal processing; feedforward compensation; power amplifiers; nonlinear systems; wideband communications; memory effect; modelling; simulation.
International Journal of Intelligent Systems Technologies and Applications, 2010 Vol.9 No.3/4, pp.326 - 334
Published online: 04 Nov 2010 *Full-text access for editors Access for subscribers Purchase this article Comment on this article