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A Low-Complexity DPD to Fully Linearize the Power Amplifiers in a mMIMO Transmitter
Linköpings universitet, Institutionen för systemteknik, Kommunikationssystem. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0002-9594-5669
Linköpings universitet, Institutionen för systemteknik, Kommunikationssystem. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0001-6329-9132
Natl Inst Technol Silchar, India.
2024 (Engelska)Ingår i: ICC 2024 - IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, IEEE , 2024, s. 545-550Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

A radio frequency (RF) power amplifier (PA) is crucial to enhance the signal to transmit via antenna over long distances. High-power transmission often leads to nonlinear behavior in the PA, necessitating the use of digital predistortion (DPD) signal processing to restore linearity by preinverting the nonlinearity. However, when dealing with a massive MIMO (mMIMO) transmitter with numerous PAs, a single DPD is not enough, and allocating a separate DPD for each PA is intricate and cost-inefficient. In this study, we tackle these challenges through our proposed low-complexity DPD (LC-DPD) architecture. The LC-DPD has the flexibility to choose the parameters of its architecture as per the desired tradeoff between the performance and complexity in the linearization. It employs learning of its coefficients through algorithms utilizing an indirect learning architecture based recursive prediction error method (ILA-RPEM), which is adaptive and free from matrix inversions.

Ort, förlag, år, upplaga, sidor
IEEE , 2024. s. 545-550
Serie
IEEE International Conference on Communications, ISSN 1550-3607, E-ISSN 1938-1883
Nyckelord [en]
Digital predistortion signal processing; indirect learning architecture; recursive prediction error method
Nationell ämneskategori
Signalbehandling
Identifikatorer
URN: urn:nbn:se:liu:diva-212060DOI: 10.1109/ICC51166.2024.10622602ISI: 001300022500090Scopus ID: 2-s2.0-85202808811ISBN: 9781728190549 (digital)ISBN: 9781728190556 (tryckt)OAI: oai:DiVA.org:liu-212060DiVA, id: diva2:1942540
Konferens
59th Annual IEEE International Conference on Communications (IEEE ICC), Denver, CO, jun 09-13, 2024
Tillgänglig från: 2025-03-05 Skapad: 2025-03-05 Senast uppdaterad: 2025-03-05

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