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Low-Cost FPGA Implementation of Volterra Series-Based Digital Predistorter for RF Power Amplifiers

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2 Author(s)
Lei Guan ; Sch. of Electr., Electron. & Mech. Eng., Univ. Coll. Dublin, Dublin, Ireland ; Anding Zhu

This paper presents a low-complexity and low-cost hardware implementation of a Volterra series-based digital predistorter (DPD). This is achieved by introducing two novel model complexity reduction techniques into the system, namely, lookup table assisted gain indexing and time-division multiplexing for multiplier sharing. Experimental results show that this novel DPD implementation uses much less hardware resources, but still maintains excellent performance compared to conventional approaches.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:58 ,  Issue: 4 )