Reconfigurable Backscattering Communication System Based on Time Modulation Technique
-
摘要: 近年来，时间调制阵列因其优越的矢量调控性能受到广泛关注。基于时间调制方法，该文提出一种可重构后向散射通信系统。该系统中后向散射节点将多类数字调制符号映射至控制信号波形的谐波分量中，以该波形控制后向散射节点对基站端来波的散射与吸收态；接收机采样后向散射信号并提取控制信号波形后，通过傅里叶变换计算谐波分量并恢复后向散射节点发射的数字调制符号。仿真结果验证了几种谐波解调方法的性能及与理论值的一致性。基于幅度、相位键控及正交振幅调制的可重构后向散射传输实验验证了所提系统和方法的可行性。相比较而言，该后向散射通信系统具有功耗低、结构简单、多类数字调制方式可重构的特点。Abstract: In recent years, time-modulated array has aroused much attention due to its superior performance on vector control. Based on the time modulation method, a type of reconfigurable backscattering communication system based on time modulation technique is proposed in this paper. In backscattering node of the proposed system, multiple digital modulation symbols are mapped into the harmonic component of the control waveforms. The scattering or absorbing states of the incoming wave from the base station are then controlled by the designed waveforms. After the receiver samples the backscattering signal and extracts the control waveforms, the digital modulation symbols transmitted from the backscattering node can be recovered from the harmonic component with the Fourier transform. Simulation results demonstrate the performance of the harmonic demodulation methods and consistency with the theoretical values. Meanwhile, the reconfigurable backscattering transmitting experiments based on amplitude, phase shift keying and quadrature amplitude modulation demonstrate the feasibility of the proposed system and methods. In comparison, the proposed system has the characteristics of low power consumption, simple structure and reconfigurable digital modulation.
-
[1] SHANKS H E and BICKMORE R W. Four-dimensional electromagnetic radiators[J]. Canadian Journal of Physics, 1959, 37(3): 263–275. doi: 10.1139/p59-031. [2] FARZANEH S and SEBAK A R. Microwave sampling beamformer: Prototype verification and switch design[J]. IEEE Transactions on Microwave Theory and Techniques, 2009, 57(1): 36–44. doi: 10.1109/TMTT.2008.2009080. [3] YAO Amin, WU Wen, and FANG Dagang. Single-sideband time-modulated phased array[J]. IEEE Transactions on Antennas and Propagation, 2015, 63(5): 1957–1968. doi: 10.1109/TAP.2015.2406890. [4] LI Haotian, CHEN Yikai, and YANG Shiwen. Harmonic beamforming in antenna array with time-modulated amplitude-phase weighting technique[J]. IEEE Transactions on Antennas and Propagation, 2019, 67(10): 6461–6472. doi: 10.1109/TAP.2019.2922815. [5] NI Gang, HE Chong, GAO Yanchang, et al. High-efficiency modulation and harmonic beam scanning in time-modulated array[J]. IEEE Transactions on Antennas and Propagation, 2023, 71(1): 368–380. doi: 10.1109/TAP.2021.3119046. [6] NI Gang, HE Chong, and JIN Ronghong. An improved modulation module in time-modulated array[J]. IEEE Antennas and Wireless Propagation Letters, 2022, 21(3): 561–565. doi: 10.1109/LAWP.2021.3138405. [7] 罗玉川, 向磊, 高彦昌, 等. 时间调制阵列天线的非理想波形调制研究[J]. 电波科学学报, 2022, 37(3): 388–393. doi: 10.12265/j.cjors.2021148.LUO Yuchuan, XIANG Lei, GAO Yanchang, et al. Research on non-ideal waveform modulation of time modulation array antenna[J]. Chinese Journal of Radio Science, 2022, 37(3): 388–393. doi: 10.12265/j.cjors.2021148. [8] 黎皓天, 陈益凯, 杨仕文. 2比特时间调制阵列的非理想特性建模研究[J]. 电波科学学报, 2022, 37(6): 925–932. doi: 10.12265/j.cjors.2022056.LI Haotian, CHEN Yikai, and YANG Shiwen. Modeling of nonideal characteristics in 2-bit time-modulated arrays[J]. Chinese Journal of Radio Science, 2022, 37(6): 925–932. doi: 10.12265/j.cjors.2022056. [9] ZHU Quanjiang, YANG Shiwen, YAO Ruilin, et al. Unified time- and frequency-domain study on time-modulated arrays[J]. IEEE Transactions on Antennas and Propagation, 2013, 61(6): 3069–3076. doi: 10.1109/TAP.2013.2253538. [10] MANEIRO-CATOIRA R, BRÉGAINS J C, GARCÍA-NAYA J A, et al. On the feasibility of time-modulated arrays for digital linear modulations: A theoretical analysis[J]. IEEE Transactions on Antennas and Propagation, 2014, 62(12): 6114–6122. doi: 10.1109/TAP.2014.2365827. [11] ZHU Quanjiang, YANG Shiwen, YAO Ruilin, et al. Directional modulation based on 4-D antenna arrays[J]. IEEE Transactions on Antennas and Propagation, 2014, 62(2): 621–628. doi: 10.1109/TAP.2013.2290122. [12] CHEN Kejin, YANG Shiwen, CHEN Yikai, et al. Hybrid directional modulation and beamforming for physical layer security improvement through 4-D Antenna arrays[J]. IEEE Transactions on Antennas and Propagation, 2021, 69(9): 5903–5912. doi: 10.1109/TAP.2021.3060056. [13] ROCCA P, ZHU Quanjiang, BEKELE E T, et al. 4-D arrays as enabling technology for cognitive radio systems[J]. IEEE Transactions on Antennas and Propagation, 2014, 62(3): 1102–1116. doi: 10.1109/TAP.2013.2288109. [14] HE Chong, LIANG Xianling, ZHOU Bin, et al. Space-division multiple access based on time-modulated array[J]. IEEE Antennas and Wireless Propagation Letters, 2015, 14: 610–613. doi: 10.1109/LAWP.2014.2373431. [15] CHEN Qun, BAI Lin, HE Chong, et al. On the harmonic selection and performance verification in time-modulated array-based space division multiple access[J]. IEEE Transactions on Antennas and Propagation, 2021, 69(6): 3244–3256. doi: 10.1109/TAP.2020.3037738. [16] SUDEVALAYAM S and KULKARNI P. Energy harvesting sensor nodes: Survey and implications[J]. IEEE Communications Surveys & Tutorials, 2011, 13(3): 443–461. doi: 10.1109/SURV.2011.060710.00094. [17] 张倩倩, 王俊, 梁应敞. 面向6G的共生散射通信技术: 原理、方法与应用[J]. 中国科学:信息科学, 2022, 52(8): 1393–1416. doi: 10.1360/SSI-2022-0153.ZHANG Qianqian, WANG Jun, and LIANG Yingchang. Symbiotic backscatter communications for 6G: Principles, approaches, and applications[J]. SCIENTIA SINICA Informationis, 2022, 52(8): 1393–1416. doi: 10.1360/SSI-2022-0153. [18] THOMAS S J, WHEELER E, TEIZER J, et al. Quadrature amplitude modulated backscatter in passive and semipassive UHF RFID systems[J]. IEEE Transactions on Microwave Theory and Techniques, 2012, 60(4): 1175–1182. doi: 10.1109/TMTT.2012.2185810. [19] CHO K and YOON D. On the general BER expression of one- and two-dimensional amplitude modulations[J]. IEEE Transactions on Communications, 2002, 50(7): 1074–1080. doi: 10.1109/TCOMM.2002.800818. -
下载:
图(9) / 表(1)
计量
- 文章访问数: 228
- HTML全文浏览量: 166
- PDF下载量: 42
- 被引次数: 0
下载:
