M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method
M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method
复制标题
基于虚拟时间反演镜法的多进制非线性正弦啁啾扩频水声通信
DOI：
10.1186/s13638-021-01995-3
复制
发表时间：
2021-05
影响因子：
2.6
通讯作者：
Raza Waleed
中科院分区：
文献类型：
--
作者：
Liu Songzuo;Zuberi Habib Hussain;Lou Yi;Farooq Muhmmad Bilal;Shaikh Shahabuddin;Raza Waleed
线性线性调频扩频技术因其对强多径和多卜勒频移的适应能力，在水声通信中得到了广泛的应用。线性调频信号需要较高的扩频因子以接近达到两对信号之间的正交性。另一方面，非线性线性调频扩频信号可以在低扩展因子下提供正交性。因此，它提高了频谱效率，并且比线性对应的方法对多普勒扩展更不敏感。为了获得更高的数据速率，我们提出了两种基于虚拟时间反转镜(VTRM)的M元非线性正弦线性调频技术的变种(半周期正弦和全周期正弦)。该方案使用不同的频段来传输线性调频信号，并利用VTRM来改善由于多径较大而产生的误码率。其优越的多普勒灵敏度使其适用于水声通信。此外，该方法使用了简单、低功耗的匹配滤波器组，从而降低了整体系统的复杂度。在不同的水声信道下进行了仿真，验证了该方案的稳健性。
Linear chirp spread spectrum technique is widely used in underwater acoustic communication because of their resilience to high multipath and Doppler shift. Linear frequency modulated signal requires a high spreading factor to nearly reach orthogonality between two pairs of signals. On the other hand, nonlinear chirp spread spectrum signals can provide orthogonality at a low spreading factor. As a result, it improves spectral efficiency and is more insensitive to Doppler spread than the linear counterpart. To achieve a higher data rate, we propose two variants (half cycle sine and full cycle sine) of the M-ary nonlinear sine chirp spread spectrum technique based on virtual time-reversal mirror (VTRM). The proposed scheme uses different frequency bands to transmit chirp, and VTRM is used to improve the bit error rate due to high multipath. Its superior Doppler sensitivity makes it suitable for underwater acoustic communication. Furthermore, the proposed method uses a simple, low-power bank of matched filters; thus, it reduces the overall system complexity. Simulations are performed in different underwater acoustic channels to verify the robustness of the proposed scheme.
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影响因子：
2.2
作者：
N. Goyal;M. Dave;A. Verma
通讯作者：
N. Goyal;M. Dave;A. Verma
DOI：
10.1109/tencon.2005.301178
发表时间：
2005-11
期刊：
TENCON 2005 - 2005 IEEE Region 10 Conference
影响因子：
--
作者：
Jianguo Huang;Chengbing He;Qunfei Zhang
通讯作者：
Jianguo Huang;Chengbing He;Qunfei Zhang
影响因子：
5.3
作者：
通讯作者：
--
DOI：
10.1145/3291940.3291964
发表时间：
2018-12
期刊：
Proceedings of the 13th International Conference on Underwater Networks & Systems
影响因子：
--
作者：
Fabian Steinmetz;J. Heitmann;C. Renner
通讯作者：
Fabian Steinmetz;J. Heitmann;C. Renner
基于虚拟时间反转镜的多进制循环移位键控扩频水声通信
影响因子：
3.9
作者：
Zhou Feng;Liu Bing;Nie Donghu;Yang Guang;Zhang Wenbo;Ma Dongdong
通讯作者：
Ma Dongdong