Sökning: onr:"swepub:oai:DiVA.org:kth-28282" >
Joint Mitigation of...
Joint Mitigation of Power Amplifier and I/Q Modulator Impairments in Broadband Direct-Conversion Transmitters
-
Anttila, Lauri (författare)
-
- Händel, Peter, 1962- (författare)
- KTH,Signalbehandling,ACCESS Linnaeus Centre
-
Valkama, Mikko (författare)
-
(creator_code:org_t)
- 2010
- 2010
- Engelska.
-
Ingår i: IEEE transactions on microwave theory and techniques. - 0018-9480 .- 1557-9670. ; 58:4, s. 730-739
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- In this paper, we present a novel digital predistorter structure for joint mitigation of frequency-dependent power amplifier (PA) and in-phase and quadrature (I/Q) modulator impairments in direct-conversion radio transmitters. The predistorter is based on an extended parallel Hammerstein structure, yielding a predistorter that is fully linear in the parameters. In the parameter estimation stage, the indirect learning architecture is utilized. The proposed technique is the first technique in the literature to consider the joint estimation and mitigation of frequency-dependent PAand I/Q modulator impairments. Extensive simulation and measurement analysis is carried out to verify the operation and efficacy of the proposed predistortion structure. It is shown that the adjacent channel power ratio is increased by more than 20 dB in all experiments when using the proposed method, and that the performance of the reference techniques is clearly exceeded.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Digital predistortion (PD)
- direct-conversion radio
- in-phase and quadrature (I/Q) imbalance
- I/Q modulator
- local oscillator (LO) leakage
- mirror-frequency interference (MFI)
- power amplifier (PA)
- spectral regrowth
- Electrical engineering, electronics and photonics
- Elektroteknik, elektronik och fotonik
- Information technology
- Informationsteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas