| 刘珍,郭银景,杨文健.水下FBMC系统的离散导频信道估计技术研究*[J].电子测量与仪器学报,2021,35(2):179-185 |
| 水下FBMC系统的离散导频信道估计技术研究* |
| Research on discrete pilot channel estimation technology of underwater FBMC system |
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| DOI： |
| 中文关键词: 滤波器组多载波(FBMC) 水声信道估计 离散导频 |
| 英文关键词:filter bank multicarrier(FBMC) underwater acoustic channel estimation scattered pilot |
| 基金项目:山东省重点研发计划（公益类专项）项目(2018GHY115022)、国家自然科学基金(61471224)项目资助 |
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| Author | Institution |
| Liu Zhen | College of Electronic Information Engineering, Shandong University of Science and Technology, Qingdao 266590,China |
| Guo Yinjing | 1.College of Electronic Information Engineering, Shandong University of Science and Technology, Qingdao 266590,China;2.Qingdao Zhihai Muyang Technology Co., Ltd., Qingdao 266590,China |
| Yang Wenjian | College of Electronic Information Engineering, Shandong University of Science and Technology, Qingdao 266590,China; |
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| 中文摘要: |
| 水下环境的复杂性对水声通信带来挑战，一般通过优化信道估计技术来实现水下通信的高速率、可靠性传输。将滤波器组多载波/交错正交幅度调制(filter bank based multicarrier/offset quadrature amplitude modulation, FBMC/OQAM)技术引入水下，研究FBMC/OQAM系统中信道估计技术，并对离散导频信道估计算法进行重点研究。分析了不同信道影响下离散导频信道估计的性能，并针对辅助导频法额外功率消耗过高的问题进行改进，提出一种改进的辅助导频方法(improved auxiliary pilot method，IAP)，降低功率消耗的同时又提高了估计性能。理论分析和水下仿真结果表明， IAP算法是水声通信实际应用中较好的选择。 |
| 英文摘要: |
| The complexity of the underwater environment poses a challenge to underwater acoustic communication, the high rate and reliable transmission of underwater communication is achieved by optimizing channel estimation technology. In this paper, the filter bank multicarrier/offset quadrature amplitude modulation (FBMC/OQAM) modulation technology is introduced underwater, the channel estimation technology in the FBMC/OQAM system is studied, and the discrete pilot channel estimation algorithm is studied in detail. This paper analyzes the performance of discrete pilot channel estimation under the influence of different channels, and improves the problem of excessive power consumption of the auxiliary pilot method. An improved auxiliary pilot method (IAP) is proposed to reduce the power consumption, it also improves the estimated performance. Theoretical analysis and simulation results show that the IAP algorithm proposed in this paper is a good choice for the practical application of underwater acoustic communication. |
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