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Behavioral modeling...
Behavioral modeling and digital pre-distortion techniques for RF PAs in a 3 x 3 MIMO system
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- Alizadeh, Mahmoud (författare)
- Högskolan i Gävle,KTH,Teknisk informationsvetenskap,Department of Electrical Engineering, Mathematics and Science, University of Gävle, Gävle, Sweden,Elektronik,KTH, Teknisk informationsvetenskap
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- Händel, Peter (författare)
- KTH,Teknisk informationsvetenskap,KTH, Teknisk informationsvetenskap
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- Rönnow, Daniel (författare)
- Högskolan i Gävle,Elektronik
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(creator_code:org_t)
- Cambridge University Press, 2019
- 2019
- Engelska.
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Ingår i: International journal of microwave and wireless technologies. - : Cambridge University Press. - 1759-0795 .- 1759-0787. ; 11:10, s. 989-999
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Modern telecommunications are moving towards (massive) multi-input multi-output (MIMO) systems in 5th generation (5G) technology, increasing the dimensionality of the systems dramatically. In this paper, the impairments of radio frequency (RF) power amplifiers (PAs) in a 3 x 3 MIMO system are compensated in both the time and the frequency domains. A three-dimensional (3D) time-domain memory polynomial-type model is proposed as an extension of conventional 2D models. Furthermore, a 3D frequency-domain technique is formulated based on the proposed time-domain model to reduce the dimensionality of the model, while preserving the performance in terms of model errors. In the 3D frequency-domain technique, the bandwidth of the system is split into several narrow sub-bands, and the parameters of the model are estimated for each sub-band. This approach requires less computational complexity, and also the procedure of the parameters estimation for each sub-band can be implemented independently. The device-under-test consists of three RF PAs including input and output cross-talk channels. The proposed techniques are evaluated in both behavioral modeling and digital pre-distortion (DPD) perspectives. The experimental results show that the proposed DPD technique can compensate the errors of non-linearity and memory effects in the both time and frequency domains.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Radio frequency power amplifier
- non-linearity
- memory effects
- multiple-input multiple-output (MIMO)
- behavioral modelling
- digital pre-distortion
- Intelligent industri
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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