Digital pre-distortion techniques for multi-beam interactions on LEO satellites

doi:10.7523/j.ucas.2023.042

Abstract

Abstract: The convergence of broadband LEO satellite communication systems with 5G is the development trend of satellite communication. To meet the demand for high-speed data transmission, multibeam technology based on large-scale digital phased arrays is indispensable. The peak-to-average ratio problem of multibeam signals makes the non-linear distortion of onboard amplifiers urgent to be solved, while the non-linear distortion of power amplifiers leads to serious interference between multibeams. A digital pre-distortion structure for multibeam is proposed for low-orbit satellite communication systems using large-scale phased arrays. A pre-distortion model is developed to solve the problems of non-linearity, intermodulation distortion and multibeam interference. Through simulation experiments, it is found that the proposed structure is more advantageous than the traditional pre-distortion structure in terms of performance and complexity balance, providing a feasible solution for the implementation of multi-beam and overcoming non-linearity on board.

Key words: digital pre-distortion, multi-beam, LEO satellites, power amplifiers

CLC Number:

TN927

HUANG Chenguang, WANG Haiwang, SHAO Fengwei, LI Guotong. Digital pre-distortion techniques for multi-beam interactions on LEO satellites[J]. Journal of University of Chinese Academy of Sciences, DOI: 10.7523/j.ucas.2023.042.

References

[1] 孙晨华, 章劲松, 赵伟松, 等. 高低轨宽带卫星通信系统特点对比分析[J]. 无线电通信技术, 2020, 46(5): 505-510. DOI:10.3969/j.issn.1003-3114.2020.05.002.
[2] 陈山枝. 关于低轨卫星通信的分析及我国的发展建议[J]. 电信科学, 2020, 36(6): 1-13. DOI: 10.11959/j.issn.1000-0801.2020181.
[3] 李科新, 尤力, 高西奇. 基于大规模MIMO的低轨卫星通信系统[J]. 天地一体化信息网络, 2022, 3(1): 2-8. DOI:10.11959/j.issn.2096-8930.2022001.
[4] Spano D, Chatzinotas S, Krause J, et al.Symbol-level precoding with per-antenna power constraints for the multi-beam satellite downlink[C]//2016 8th Advanced Satellite Multimedia Systems Conference and the 14th Signal Processing for Space Communications Workshop (ASMS/SPSC). September 5-7, 2016, Palma de Mallorca, Spain. IEEE, 2016: 1-8. DOI:10.1109/ASMS-SPSC.2016.7601542.
[5] Shen J Y, Suyama S, Obara T, et al.Requirements of power amplifier on super high bit rate massive MIMO OFDM transmission using higher frequency bands[C]//2014 IEEE Globecom Workshops (GC Wkshps). December 8-12, 2014, Austin, TX, USA. IEEE, 2015: 433-437. DOI:10.1109/GLOCOMW.2014.7063470.
[6] Ding L, Zhou G T, Morgan D R, et al.A robust digital baseband predistorter constructed using memory polynomials[J]. IEEE Transactions on Communications, 2004, 52(1): 159-165. DOI:10.1109/TCOMM.2003.822188.
[7] Jeckeln E G, Ghannouchi F M, Sawan M A.A new adaptive predistortion technique using software-defined radio and DSP technologies suitable for base station 3G power amplifiers[J]. IEEE Transactions on Microwave Theory and Techniques, 2004, 52(9): 2139-2147. DOI:10.1109/TMTT.2004.834174.
[8] Batov Y, Puzko D, Gelgor A, et al.High power amplifier nonlinearity models and digital predistortion techniques in DVB-S2X[C]//2022 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB). June 15-17, 2022, Bilbao, Spain. IEEE, 2022: 1-6. DOI:10.1109/BMSB55706.2022.9828608.
[9] Mollen C, Larsson E G, Gustavsson U, et al.Out-of-band radiation from large antenna arrays[J]. IEEE Communications Magazine, 2018, 56(4): 196-203. DOI:10.1109/MCOM.2018.1601063.
[10] 艾渤, 李波, 钟章队. 宽带功率放大器预失真原理[M]. 北京: 科学出版社, 2011.
[11] Braithwaite R.General principles and design overview of digital predistortion[M]//Digital Front-End in Wireless Communications and Broadcasting. Cambridge: Cambridge University Press, 2011: 143-191. DOI: 10.1017/cbo9780511744839.007.
[12] Abdelaziz M, Anttila L, Valkama M.Reduced-complexity digital predistortion for massive MIMO[C]//2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). March 5-9, 2017, New Orleans, LA, USA. IEEE, 2017: 6478-6482. DOI:10.1109/ICASSP.2017.7953404.
[13] 刘昕, 陈文华, 吴汇波,等. 功放数字预失真线性化技术发展趋势与挑战[J]. 中国科学:信息科学, 2022, 52(4): 569-595.
[14] Liu L, Chen W H, Ma L Y, et al.Single-PA-feedback digital predistortion for beamforming MIMO transmitter[C]//2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT). June 5-8, 2016, Beijing, China. IEEE, 2016: 573-575. DOI:10.1109/ICMMT.2016.7762371.
[15] Brihuega A, Anttila L, Abdelaziz M, et al.Digital predistortion in large-array digital beamforming transmitters[C]//2018 52nd Asilomar Conference on Signals, Systems, and Computers. October 28-31, 2018, Pacific Grove, CA, USA. IEEE, 2019: 611-618. DOI:10.1109/ACSSC.2018.8645137.
[16] Wu Q, Jing J X, Zhu X W, et al.Digital predistortion for concurrent dual-band millimeter wave analog multibeam transmitters[J]. IEEE Transactions on Circuits and Systems II: Express Briefs, 2022, 69(3): 1747-1751. DOI:10.1109/TCSII.2021.3105301.
[17] Jing J X, Shao H, Yan P P, et al.Digital predistortion of millimeter-wave multi-beam transmitters with digital beam-forming network[C]//2019 IEEE MTT-S International Wireless Symposium (IWS). May 19-22, 2019, Guangzhou, China. IEEE, 2019: 1-3. DOI:10.1109/IEEE-IWS.2019.8803986.
[18] Ng E, Beltagy Y, Scarlato G, et al.Digital predistortion of millimeter-wave RF beamforming arrays using low number of steering angle-dependent coefficient sets[J]. IEEE Transactions on Microwave Theory and Techniques, 2019, 67(11): 4479-4492. DOI:10.1109/TMTT.2019.2924893.
[19] Kim J, Konstantinou K.Digital predistortion of wideband signals based on power amplifier model with memory[J]. Electronics Letters, 2001, 37(23): 1417. DOI:10.1049/el:20010940.
[20] Kenington P B.High-linearity RF amplifier design[M]. Boston: Artech House, 2000.
[21] 李泓旻. 波束成形系统线性化与基于神经网络的宽带数字预失真研究[D]. 合肥: 中国科学技术大学, 2021.
[22] Bassam S A, Helaoui M, Ghannouchi F M.2-D digital predistortion (2-D-DPD) architecture for concurrent dual-band transmitters[J]. IEEE Transactions on Microwave Theory and Techniques, 2011, 59(10): 2547-2553. DOI: 10.1109/TMTT.2011.2163802.
[23] Saleh A A M. Frequency-independent and frequency-dependent nonlinear models of TWT amplifiers[J]. IEEE Transactions on communications, 1981, 29(11): 1715-1720. DOI:10.1109/TCOM.1981.1094911.
[24] Morello A, Mignone V.DVB-S2: the second generation standard for satellite broad-band services[J]. Proceedings of the IEEE, 2006, 94(1): 210-227. DOI:10.1109/JPROC.2005.861013.