Abstract
Orthogonal frequency division multiplexing technology, as a key technology of NR air interface transmission, has the advantages of resisting frequency selective fading and narrowband interference, but the problem of high peak-to-average power ratio (PAPR) is easy to cause semiconductor devices to work in the nonlinear region. There are serious problems with intermodulation component, in-band interference, and out-band spectrum regeneration. Especially in NR 3GPP R15 protocol, the PAPR of the demodulation reference signal symbol is further increased when the three or four-layer beamforming is carried out based on the precoding matrix indicator (PMI) mode. The paper analyzes the cause of this problem, theoretically. And in order to solve the above problem, a rotation factor algorithm based on step gradient is proposed. The simulation results show that the algorithm can effectively reduce the PAPR of DMRS symbol in PMI mode without affecting the demodulation performance of data symbols and is easy to implement in engineering with low computational complexity.




















Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.References
Gimenez, J. J., et al. (2019). 5G new radio for terrestrial broadcast: a forward-looking approach for NR-MBMS. IEEE Transactions on Broadcasting, 65(2), 356–368.
Wunder, G., Fischer, R. F. H., Boche, H., Litsyn, S., & No, J.-S. (2013). The PAPR problem in OFDM transmission: new directions for a long-lasting problem. IEEE Signal Processing Magazine, 30(6), 130–144.
Kim, M., Lee, W., & Cho, D. H. (2017). A novel PAPR reduction scheme for OFDM system based on deep learning. IEEE Communications Letters, 22(3), 510–513.
Sohn, I., & Kim, S. C. (2015). Neural network based simplified clipping and filtering technique for PAPR reduction of OFDM signals. IEEE Communications Letters, 19(8), 1438–1441.
Hwang, T., Yang, C., Wu, G., et al. (2009). OFDM and its wireless applications: a survey. IEEE Transactions on Vehicular Technology, 58(4), 1673–1694.
Xing, Z., Li, Y., Peng, D., & Xia, S. (2023). Curve fitting based piecewise nonlinear companding scheme for PAPR reduction in OFDM systems. IEEE Communications Letters, 27(2), 681–685.
Rakshit, M., Bhattacharjee, S., Garai, G., et al. (2021). Advanced switching DE algorithm based PTS companding technique for PAPR reduction in OFDM systems. Telecommunication Systems, 77, 109–128.
Omar, M. S., Qi, J., & Ma, X. (2023). Mitigating clipping distortion in multicarrier transmissions using tensor-train deep neural networks. IEEE Transactions on Wireless Communications, 22(3), 2127–2138.
Baruffa, G., Rugini, L., Frescura, F., et al. (2023). Low-complexity PAPR reduction by coded data insertion on DVB-T2 reserved carriers. IEEE Access, 11, 73377–73393.
3GPP. Retrieved September 13, 2023, from https://www.3gpp.org/ftp/Specs/archive/38_series/38.211/38211-f20.zip
Duranay, A. E., Memisoglu, E., Özbakiş, B., et al. (2023). Phase rotation approach with mixed-numerology architecture for PAPR reduction in 5G and beyond. IEEE Access, 11, 48113–48122.
Zhang, S.-Y., & Shahrrava, B. (2021). A SLM scheme for PAPR reduction in polar coded OFDM-IM systems without using side information. IEEE Transactions on Broadcasting, 67(2), 463–472.
Funding
The authors declare that no funds, grants, or other support were received during the preparation of this manuscript.
Author information
Authors and Affiliations
Contributions
Problem analysis, algorithm design and simulation experiments were performed by HZ. The first draft of the manuscript was written by HZ. In the second draft of the manuscript, YW and DL provided the simulation data of the traditional algorithms and the analysis of the algorithm complexity, and ZL and HL added the analysis of the literature. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
Corresponding author
Ethics declarations
Conflict of interest
The authors have no relevant financial or non-financial interests to disclose.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Zhu, H., Zhao, X., Li, D. et al. A reduced peak-to-average power ratio algorithm based on PMI mode in NR. Telecommun Syst 85, 539–550 (2024). https://doi.org/10.1007/s11235-024-01100-1
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11235-024-01100-1