Quantized Polar Transmitters for Power Efficient Massive MIMO Systems

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2021-04
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
859 - 863
Series
IEEE WIRELESS COMMUNICATIONS LETTERS, Volume 10, issue 4
Abstract
This letter investigates the feasibility of the quantized digital polar transmitter architecture in a downlink multi-user massive multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) system, where a low amplitude resolution and a moderate phase resolution are utilized. We derive a lower bound on the average sum-rate achievable with Gaussian signaling inputs and linear precoding by a simple diagonal approximation for the quantization distortion. The analysis and simulations demonstrate that the quantized polar transmitter can enable excellent performance in terms of average sum-rate throughput, symbol error rate (SER), and out-of-band (OOB) emission level, thus providing an attractive option for the traditional Cartesian architecture.
Description
Keywords
linear precoding, Massive MIMO, OFDM, polar transmitter, power efficiency, quantization., transmitter architectures
Other note
Citation
Xu , G , Lampu , V , Kosunen , M , Stadius , K , Ryynanen , J , Valkama , M & Anttila , L 2021 , ' Quantized Polar Transmitters for Power Efficient Massive MIMO Systems ' , IEEE WIRELESS COMMUNICATIONS LETTERS , vol. 10 , no. 4 , pp. 859 - 863 . https://doi.org/10.1109/LWC.2020.3046952