A FPGA-based design methodology for digital predistortion of power amplifiers

This paper describes the design and implementation of a memoryless digital predistortion (DPD) system for the linearization of power amplifiers. The system prototype predistorter requirements and architecture are implemented over a DSP-FPGA development kit. The design methodology is described in practical blocks and analyzed in detail with special emphasis in the digital domain, where the algorithms proposed are implemented. The approach of the predistorter system is based in a complex lookup table to program the inverse AM-AM and AM-PM conversion curves of the power amplifier.

[1]  Steven J. E. Wilton,et al.  FPGA clock network architecture: flexibility vs. area and power , 2006, FPGA '06.

[2]  P. Roblin,et al.  Frequency-Selective Predistortion Linearization of RF Power Amplifiers , 2008, IEEE Transactions on Microwave Theory and Techniques.

[3]  P. M. Asbeck,et al.  Closed-Loop Digital Predistortion System With Fast Real-Time Adaptation Applied to a Handset WCDMA PA Module , 2012, IEEE Transactions on Microwave Theory and Techniques.

[4]  Ming Chen,et al.  A new baseband digital predistortion system , 2005, 2005 Asia-Pacific Microwave Conference Proceedings.

[5]  P. Roblin,et al.  Volterra characterization and predistortion linearization of multi-carrier power ampliflers , 2004, 64th ARFTG Microwave Measurements Conference, Fall 2004..

[6]  Charles H. Lee,et al.  Modeling of HPA and HPA linearization through a predistorter: Global Broadcasting Service applications , 2003, IEEE Trans. Broadcast..

[7]  Ralph Hasholzner,et al.  A novel IQ imbalance compensation scheme for the reception of OFDM signals , 2001, IEEE Trans. Consumer Electron..

[8]  L. Cordesses,et al.  Direct digital synthesis: a tool for periodic wave generation (part 1) , 2004, IEEE Signal Processing Magazine.

[9]  Hugo De Man,et al.  Compensation of IQ imbalance and phase noise in OFDM systems , 2005, IEEE Transactions on Wireless Communications.

[10]  Jian Lin,et al.  Joint adaptive transmitter/receiver IQ imbalance correction for OFDM systems , 2004, 2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754).