针对短突发通信系统存在的频偏估计相位模糊问题，本文提出了一种宽范围低复杂度的时域相关频偏估计算法——基于相位解模糊的部分互相关算法.该算法利用自相关算法思想和相关代数知识消除了其复乘运算，再利用基于蒙特卡罗仿真的解相位模糊算法解决了其相位模糊问题，从而适应大频偏下的短突发通信环境.最后仿真结果表明，与经典的M&M、AC和Giugno时域算法相比，在保证了较大估计范围的同时，该算法具有更高的估计精度和更低的复杂度，适用于低时延高可靠的短数据包传输.
Abstract
Considering the phase ambiguity problem of frequency offset estimation existed in the short-burst communication, this paper proposes a wide-range low-complexity time-domain correlation frequency offset estimation algorithm-phase-unwrapping based partial cross-correlation algorithm. This algorithm uses the idea of the autocorrelation algorithm and knowledge of the algebra to eliminate its complex multiplication operation, and then utilizes a Monte-Carlo simulation based phase-unwrapping algorithm to solve the problem of phase ambiguity, thus suitable for the short burst communication environment with large frequency offsets. Simulation results show that when maintaining large estimation range, the proposed algorithm also exhibits both higher accuracy and lower complexity than the classical M&M, AC, and Giugno algorithms, thus suitable for low-latency high-reliability short packet transmission.
关键词
时域相关 /
相位模糊 /
频偏估计 /
蒙特卡洛仿真 /
无人机通信 /
短突发通信
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Key words
time-domain correlation /
phase ambiguity /
frequency offset estimation /
Monte-Carlo simulation /
UAV communication /
short-burst communication
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中图分类号：
TP911.23
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参考文献
[1] Farr W.Technology development for high efficiency optical communication[A].IEEE Aerospace Conference[C].Big Sky,MT,USA:IEEE,2012.1-8.
[2] 冯鑫,张建华,胡开群,翟志芬.基于变分多尺度的红外与可见光图像融合[J].电子学报,2018,46(3):680-687. Feng Xin,Zhang Jian-hua,Hu Kai-qun,Zhai Zhi-fen.The infrared and visible image fusion method based on variational multiscale[J].Acta Electronica Sinica,2018,46(3):680-687.(in Chinese)
[3] 韩博文,姚佩阳,钟赟,丁云松,刘子震.基于QABC-IFMADM算法的有人/无人机编队作战威胁评估[J].电子学报,2018,47(7):1584-1592. Han Bo-wen,Yao Pei-yang,Zhong Yun,Ding Yun-song,Liu Zi-zhen.Threat assessment of manned/unmanned aerial vehicle formation based on QABC-IFMADM algorithm[J].Acta Electronica Sinica,2018,47(7):1584-1592.(in Chinese)
[4] Mengali U,D'Andrea A N.Synchronization Techniques for Digital Receivers[M].New York:Plenum Press,1997.
[5] 王旭东,樊涛,黄强辉,郑步生.大多普勒频偏SOQPSK信号FFT引导COSTAS环载波跟踪技术[J].电子学报,2016,46(2):381-386. Wang Xu-dong,Fan Tao,Huang Qiang-hui,Zheng Bu-sheng.SOQPSK carrier tracking technoIogy with large DoppIer frequency offset based on FFT guided Costas loop[J].Acta Electronica Sinica,2016,46(2):381-386.(in Chinese)
[6] MorelloA,Mignone V.DVB-S2:The second generation standard for satellite broadband services[J].Proceedings of the IEEE,2006,94(1):210-227.
[7] Lo H,Lee D,Gansman J A.A study of non-uniform pilot spacing for PSAM[A].IEEE International Conference on Communications(ICC 2000)[C].New Orleans,LA,USA:IEEE,2000.322-325.
[8] Fitz M P.Further results in the fast estimation of a single frequency[J].IEEE Transactions on Communications,1994,42(3):862-864.
[9] Luise M,Reggiannini R.Carrier frequency recovery in all-digital modems for burst-mode transmissions[J].IEEE Transactions on Communications,1995,43(234):1169-1178.
[10] 晏辉,唐发建,张忠培.一种基于低码率LDPC码的编码与导频联合辅助载波同步算法[J].电子与信息学报,2011,33(2):470-474. Yan Hui,Tang Fa-jian,Zhang Zhong-pei.A joint assisted carrier synchronization algorithm with code and pilot based on low rate LDPC code[J].Journal of Electronics & Information Technology,2011,33(2):470-474.(in Chinese)
[11] Giugno L,Luise M.Carrier frequency and frequency rate-of-change estimators with preamble-postamble pilot symbol distributions[A].IEEE International Conference on Communications(ICC 2005)[C].Seoul,South Korea:IEEE,2005.2478-2482.
[12] Barbieri A,Colavolpe G.On pilot-symbol-assisted carrier synchronization for DVB-S2 systems[J].IEEE Transactions on Broadcasting,2007,53(3):685-692.
[13] Mengali U,Moerlli M.Data-aided frequency estimation for burst digital transmission[J].IEEE Transactions on Communications,1997,45(1):23-25.
[14] Palmer J,Rice M.Low-complexity frequency estimation using multiple disjoint pilot blocks in burst-mode communications[J].IEEE Transactions on Communications,2011,59(11):3135-3145.
[15] ZhongY Y.A phase increment-based frequency estimator for general PSAM in burst communications[A].IEEE 83rd Vehicle Technology Conference(VTC Spring-2016)[C].Nanjing,China:IEEE,2016.1-5.
[16] Kay S.Fundamentals of Statistical Signal Processing:Estimation Theory[M].Englewood Cliffs,NJ:Prentice-Hall,1993.
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脚注
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基金
国家自然科学基金 (No.61801527，No.61702071）; 河南省高等学校重点科研项目 (No.19A510028）; 河南省科技厅科技发展计划项目 (No.182102210152，No.182102310867，No.192102210279）
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