Singerl, P. and Koeppl, H. (2005):
A Low-rate identification method for digital predistorters based on Volterra kernel interpolation.
In: Circuits and Systems, 2005. 48th Midwest Symposium, 2, pp. 1533-1536. IEEE, [Article]
Abstract
RF power amplifiers (PA) of wireless communication systems are usually driven in their nonlinear region to obtain a higher efficiency. The price paid for the increased efficiency is the distortion of the transmission signal. To fulfil a given spectral mask for the transmission signal and to avoid an unacceptable high bit-error rate on the receiver side, the amplifier must be linearized. It is well known that nonlinear system identification (PA or predistorter) can be accomplished on the Nyquist-rate regarding the input signal bandwidth. However for predistortion applications, systems operating on the output signal Nyquist-rate are required. In this paper we show how such predistortion systems can be obtained by a multi-dimensional Volterra kernel interpolation where the kernels are estimated on a Nyquist-rate regarding the input signal, without the demand for an expensive high sampling rate analog to digital converter (ADC).
| Item Type: | Article |
|---|---|
| Erschienen: | 2005 |
| Creators: | Singerl, P. and Koeppl, H. |
| Title: | A Low-rate identification method for digital predistorters based on Volterra kernel interpolation |
| Language: | English |
| Abstract: | RF power amplifiers (PA) of wireless communication systems are usually driven in their nonlinear region to obtain a higher efficiency. The price paid for the increased efficiency is the distortion of the transmission signal. To fulfil a given spectral mask for the transmission signal and to avoid an unacceptable high bit-error rate on the receiver side, the amplifier must be linearized. It is well known that nonlinear system identification (PA or predistorter) can be accomplished on the Nyquist-rate regarding the input signal bandwidth. However for predistortion applications, systems operating on the output signal Nyquist-rate are required. In this paper we show how such predistortion systems can be obtained by a multi-dimensional Volterra kernel interpolation where the kernels are estimated on a Nyquist-rate regarding the input signal, without the demand for an expensive high sampling rate analog to digital converter (ADC). |
| Journal or Publication Title: | Circuits and Systems, 2005. 48th Midwest Symposium |
| Journal volume: | 2 |
| Place of Publication: | Cincinnati, OH, USA |
| Publisher: | IEEE |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications > Bioinspired Communication Systems 18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications |
| Date Deposited: | 27 May 2015 07:51 |
| Official URL: | http://ieeexplore.ieee.org/xpls/icp.jsp?arnumber=1594406&tag... |
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