A Joint Sonar-Communication System Based on Multicarrier Waveforms
A Joint Sonar-Communication System Based on Multicarrier Waveforms
复制标题
基于多载波波形的联合声纳通信系统
DOI：
10.1109/lsp.2021.3106889
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
刘玲亚
中科院分区：
文献类型：
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作者：
王易因;施震宇;Xiaoli Ma;刘玲亚
联合检测和通信系统在频谱和成本方面都表现出其独特的效率。在这封信中，我们提出了一个声纳通信（SonarCom）系统的水下场景的基础上两个多载波（MC）波形，这是正交频分复用（OFDM）和正交线性调频分复用（OCDM）波形。不同类型的波形提供了灵活性，以应对各种水下环境。此外，提出了一种广义似然比检验（GLRT）用于多径信道下的检测。应用时间混叠技术来利用信号结构。此外，一个最小均方误差（MMSE）均衡器被开发用于通信对抗频率选择性衰落。仿真结果表明，该GLRT检测器在SonarCom系统中的性能优于现有的匹配滤波器（MF）。OCDM方案保持了比OFDM方案更好的通信性能。
Jointdetection and communication systems demonstrate their unique efficiencies in both spectrum and cost. In this letter, we propose a sonar-communication (SonarCom) system for underwater scenarios based on two multicarrier (MC) waveforms, which are orthogonal frequency division multiplexing (OFDM) and orthogonal chirp division multiplexing (OCDM) waveforms. Different types of waveforms provide flexibilities to deal with various underwater environments. Furthermore, a generalized likelihood ratio test (GLRT) is proposed for detection to deal with multipath channels. Time aliasing techniques are applied to leverage the signal structure. Moreover, a minimum mean square error (MMSE) equalizer is developed for communication to counter frequency-selective fading. Simulation results show that the GLRT detector for the SonarCom system outperforms the existing matched filter (MF). The OCDM scheme maintains better communication performance than the OFDM one.