digital predistortion

• digital pre-distortion

digital predistortion (countable and uncountable, plural digital predistortions)

1. (electronics) A technique used to increase linearity or compensate for nonlinearity in power amplifiers.
   • 2002, Andreas Springer, Robert Weigel, “Integration of RF and Baseband Functionalities”, in UMTS: The Physical Layer of the Universal Mobile Telecommunications System (Signals and Communication Technology), Berlin: Springer, →ISBN, chapter 8 (UMTS Transceiver Design Issues), section 4 (Future Trends), page 257:

     The result will be the enhancement of the RF performance by means of digital signal processing techniques such as digital predistortion for PA linearization [179, 180], improved DC-offset compensation for zero-IF receivers, or the above described on-chip calibration of an image-reject receiver [162] (section 8.3.3).

   • 2010, Ke-Lin Du, M. N. S. Swamy, “Linearization techniques”, in Wireless Communication Systems: From RF Subsystems to 4G Enabling Technologies, Cambridge, Cambridgeshire: Cambridge University Press, →ISBN, chapter 11 (RF and microwave subsystems), section 15 (Amplifiers), page 435:

     However, the extra cost arising from couplers and other components makes such techniques much more expensive than the digital predistortion technique.

   • 2016, Song Hu, Shouhei Kousai, Jong Seok Park, Outmane Lemtiri Chlieh, Hua Wang, “Modulated Signal Measurement”, in Hua Wang, Kaushik Sengupta, editors, RF and mm-Wave Power Generation in Silicon, Amsterdam: Academic Press, →ISBN, part II (RF Power Amplifier Design Examples), chapter 9 (A transformer-based reconfigurable digital polar Doherty power amplifier fully integrated in bulk CMOS), section 4 (Experimental Results), page 268:

     Additional digital predistortions can further improve the PA linearity, and our PA’s built-in reconfigurability naturally augments such predistortions and potentially reduces their complexities.

• DPD (abbreviation)