Abstract
Linearization of massive MIMO arrays is a significant computational challenge that typically scales with the number of antennas. In this work, we introduce a beam-oriented digital predistortion (DPD) scheme for OFDM-based massive MIMO systems that applies predistortion before the precoder in the OFDM guard-band subcarriers. Using simulation results, we show that, for a 64 antenna massive MIMO array, our proposed method can achieve the same DPD performance as a conventional DPD method while requiring an order of magnitude fewer multiplications.
| Original language | English |
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| Title of host publication | 2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers |
| Number of pages | 5 |
| ISBN (Print) | 978-1-7281-9201-7 |
| DOIs | |
| Publication status | Published - 2021 |
| Event | 53rd IEEE International Symposium on Circuits and Systems, ISCAS 2021 - VIRTUAL, Daegu, Korea, Republic of Duration: 22 May 2021 → 28 May 2021 |
Conference
| Conference | 53rd IEEE International Symposium on Circuits and Systems, ISCAS 2021 |
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| Country/Territory | Korea, Republic of |
| City | Daegu |
| Period | 22/05/21 → 28/05/21 |
Funding
This work was supported in part by Xilinx, Samsung, and by the US NSF under grants CNS-1717218, CNS-2016727, and CNS-1827940, for the “PAWR Platform POWDER-RENEW: A Platform for Open Wireless Data-driven Experimental Research with Massive MIMO Capabilities.”