在大规模多输入多输出系统中，峰均功率比(PAPR)是影响发射机性能的主要因素之一。传统的PAPR降低方法都是基于全数字编码结构，无法有效地降低混合波束成形结构中发射天线端信号的PAPR。为解决这一问题，提出一种改进选择性映射(SLM)算法，该方法对输入信号进行独立的相位旋转并计算发射天线端信号的PAPR，最后选取PAPR最小的一组信号进行发送。此外，还分析了使用该算法下发射天线端信号PAPR的上界和下界。理论分析与仿真结果显示，改进SLM算法能够有效地降低混合波束成形结构发射天线端信号的PAPR。
肖迪笙
,
胡世成
,
钱骅
,
康凯
,
李明齐
. 面向混合波束成形结构的改进SLM算法[J]. 中国科学院大学学报, 2024
, 41(6)
: 786
-793
.
DOI: 10.7523/j.ucas.2023.015
In the massive multi-input multi-output system, the peak-to-average power ratio (PAPR) is one of the factors which greatly affect the performance of the transmitter. The existing PAPR reduction methods are based on the fully-digital architecture, which can not effectively reduce the PAPR of signal at the transmitting antennas in the hybrid beamforming architecture. To address this problem, an improved selective mapping (SLM) method is proposed, which adopts independent phase rotations to the initial input signal and then calculates the PAPR at the transmitting antennas and finally transmits the sequence with minimum PAPR. Besides, the upper bound and lower bound of PAPR at the transmitting antennas are analyzed. Theoretical analysis and simulation results suggest that the proposed improved SLM can effectively reduce the PAPR at the transmitting antennas in the hybrid beamforming architectures.
[1] Larsson E G, Edfors O, Tufvesson F, et al. Massive MIMO for next generation wireless systems[J]. IEEE Communications Magazine, 2014, 52(2): 186-195. DOI: 10.1109/MCOM.2014.6736761.
[2] Sohrabi F, Yu W. Hybrid analog and digital beamforming for mmWave OFDM large-scale antenna arrays[J]. IEEE Journal on Selected Areas in Communications, 2017, 35(7): 1432-1443. DOI: 10.1109/JSAC.2017.2698958.
[3] Sohrabi F, Yu W. Hybrid digital and analog beamforming design for large-scale antenna arrays[J]. IEEE Journal of Selected Topics in Signal Processing, 2016, 10(3): 501-513. DOI: 10.1109/JSTSP.2016.2520912.
[4] Xing Z T, Liu K M, Rajasekaran A S, et al. A hybrid companding and clipping scheme for PAPR reduction in OFDM systems[J]. IEEE Access, 2021, 9: 61565-61576. DOI: 10.1109/ACCESS.2021.3074009.
[5] Gökceli S, Levanen T, Riihonen T, et al. Novel iterative clipping and error filtering methods for efficient PAPR reduction in 5G and beyond[J]. IEEE Open Journal of the Communications Society, 2020, 2: 48-66. DOI: 10.1109/OJCOMS.2020.3043598.
[6] 刘璐, 赵国庆. 一种峰均比抑制方法的研究[J]. 电子学报, 2018, 46(10): 2443-2449. DOI: 10.3969/j.issn.0372-2112.2018.10.018.
[7] Singh R, Soni G K, Jain R, et al. PAPR reduction for OFDM communication system based on ZCT-pre-coding scheme[C]//2021 Second International Conference on Electronics and Sustainable Communication Systems (ICESC). August 4-6, 2021, Coimbatore, India. IEEE, 2021: 555-558. DOI: 10.1109/ICESC51422.2021. 9532776.
[8] Lv J, Wan Y. An improved tone reservation method for PAPR reduction in OFDM systems[C]//Proceedings 2013 International Conference on Mechatronic Sciences, Electric Engineering and Computer (MEC). December 20-22, 2013, Shenyang. IEEE, 2014: 3791-3794. DOI: 10.1109/MEC.2013.6885651.
[9] Han S H, Cioffi J M, Lee J H. Tone injection with hexagonal constellation for peak-to-average power ratio reduction in OFDM[J]. IEEE Communications Letters, 2006, 10(9): 646-648. DOI: 10.1109/LCOMM.2006.1714532.
[10] Hu S C, Yang M, Kang K, et al. Low complexity SLM for OFDMA system with implicit side information[C]//ICASSP 2021-2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). June 6-11, 2021, Toronto, ON, Canada. IEEE, 2021: 7933-7937. DOI: 10.1109/ICASSP39728.2021.9414599.
[11] 杨霖, 胡武君, 何向东. SFBC MIMO-OFDM系统中基于循环移位和盲检测的低复杂度 SLM算法[J]. 电子学报, 2015, 43(8): 1637-1641.
[12] Devi A, Therese M J, Dharanyadevi P, et al. A phase offset selective mapping technique for PAPR reduction in MIMO-UFMC[C]//2021 Fifth International Conference on I-SMAC (IoT in Social, Mobile, Analytics and Cloud) (I-SMAC). November 11-13, 2021, Palladam, India. IEEE, 2021: 1725-1729. DOI: 10.1109/I-SMAC52330.2021.9640996.
[13] 赵辉, 王薇, 莫谨荣, 等. 滤波器组多载波系统中基于双层优化的峰均比抑制算法[J]. 电子与信息学报, 2021, 43(6): 1742-1749. DOI: 10.11999/JEIT200369.
[14] 洪涛, 宋茂忠, 王保云. 基于随机天线阵的物理层安全通信系统峰均功率比问题研究[J]. 电子与信息学报, 2015, 37(1): 188-192. DOI: 10.11999/JEIT140089.
[15] Liew S C, Shao Y L. New transceiver designs for interleaved frequency-division multiple access[J]. IEEE Transactions on Wireless Communications, 2020, 19(12): 7765-7778. DOI: 10.1109/TWC.2020.3015723.
[16] Du J B, Xu W, Shen H, et al. Hybrid precoding architecture for massive multiuser MIMO with dissipation: sub-connected or fully connected structures?[J]. IEEE Transactions on Wireless Communications, 2018, 17(8): 5465-5479. DOI: 10.1109/TWC.2018.2844207.
[17] Park S, Heath R W. Frequency selective hybrid precoding in millimeter wave OFDMA systems[C]//2015 IEEE Global Communications Conference (GLOBECOM). December 6-10, 2015, San Diego, CA, USA. IEEE, 2016: 1-6. DOI: 10.1109/GLOCOM.2015.7417763.
[18] Jiang T, Wu Y Y. An overview: peak-to-average power ratio reduction techniques for OFDM signals[J]. IEEE Transactions on Broadcasting, 2008, 54(2): 257-268. DOI: 10.1109/TBC.2008.915770.
[19] Lee Y L, You Y H, Jeon W G, et al. Peak-to-average power ratio in MIMO-OFDM systems using selective mapping[J]. IEEE Communications Letters, 2003, 7(12): 575-577. DOI: 10.1109/LCOMM.2003.821329.
[20] Yu X H, Shen J C, Zhang J, et al. Alternating minimization algorithms for hybrid precoding in millimeter wave MIMO systems[J]. IEEE Journal of Selected Topics in Signal Processing, 2016, 10(3): 485-500. DOI: 10.1109/JSTSP.2016.2523903.
[21] Liu Y, Wang J T. Low-complexity OFDM-based hybrid precoding for multiuser massive MIMO systems[J]. IEEE Wireless Communications Letters, 2020, 9(3): 263-266. DOI: 10.1109/LWC.2019.2929518.
[22] 纪金伟. 降低OFDM/SC-FDMA系统峰均比技术研究[D]. 西安: 西安电子科技大学, 2015.
[23] Chen N, Zhou G T. Peak-to-average power ratio reduction in OFDM with blind selected pilot tone modulation[J]. IEEE Transactions on Wireless Communications, 2006, 5(8): 2210-2216. DOI: 10.1109/TWC.2006.1687737.
