Single-Model Single-Feedback Digital Predistortion for Concurrent Multi-band Wireless Transmitters

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Title: Single-Model Single-Feedback Digital Predistortion for Concurrent Multi-band Wireless Transmitters
Authors: Yu, Chao
Xia, Jing
Zhu, Xiao-Wei
Zhu, Anding
Permanent link: http://hdl.handle.net/10197/8401
Date: 19-May-2015
Abstract: In this paper, a novel single-model single-feedback digital predistortion (DPD) technique is proposed to linearize concurrent multi-band wireless transmitters. By employing carrier relocation and band-limiting functions in digital signal processing, DPD model complexity is significantly reduced and only one narrowband feedback loop is required for data acquisition. In the new system, the linearization bandwidth can be arbitrarily reconfigured, which provides considerable flexibility for DPD system design in wideband concurrent operations. Experimental tests were conducted to validate various cases including a concurrent quad-band scenario that is reported for the first time to date. Excellent performance demonstrates that the proposed approach provides an effective solution for reducing DPD system implementation complexity and cost in both digital and analog domains for future wideband concurrent multi-band transmitters.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: IEEE
Copyright (published version): 2015 IEEE
Keywords: Concurrent;Digital predistortion (DPD);Linearization;Multi-band;Power amplifiers (PAs);Wideband
DOI: 10.1109/TMTT.2015.2429633
Language: en
Status of Item: Peer reviewed
Appears in Collections:Electrical and Electronic Engineering Research Collection

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