SOC水声信道模型及其计算方法研究

doi:10.11896/j.issn.1002-137X.2018.08.017

计算机科学 ›› 2018, Vol. 45 ›› Issue (8): 94-99.doi: 10.11896/j.issn.1002-137X.2018.08.017

SOC水声信道模型及其计算方法研究

吴鹏¹, 周杰^1,2, 陈姜高路¹

南京信息工程大学电子与信息工程学院南京210044¹
日本国立新泻大学工学部新泻950-2181²

收稿日期:2017-09-15 出版日期:2018-08-29 发布日期:2018-08-29
作者简介:吴鹏(1994-),男,硕士生,主要研究方向为无线通信信号处理、无线传感网,E-mail:wupeng@nuist.edu.cn; 周杰(1964-),男,教授,博士生导师,主要研究方向为移动通信理论、无线传感网和无线接入网等,E-mail:zhoujienuist@139.com(通信作者); 陈姜高路(1993-),男,硕士生,主要研究方向为无线通信信号处理、无线传感网。
基金资助:
本文受国家自然科学基金面上项目(61471153,61771248),江苏省高校自然科学基金重大项目(14KJA510001),江苏省信息与通信工程优势学科建设项目资助。

Research on Underwater Acoustic Channel Model and Its Calculation Method Based on SOC

WU Peng¹, ZHOU Jie^1,2, CHENG Jiang-gao-lu¹

School of Electronics & Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China¹
Deparment of Engineering,Niigata University,Niigata 950-2181,Japan²

Received:2017-09-15 Online:2018-08-29 Published:2018-08-29

摘要/Abstract

摘要： 对水下声波通信环境中的无线传播信道直达与非直达环境进行研究,引入几何参考模型,设计出相关模型。假设在三维水下空间的一个二维竖直横截面上均匀分布着数量无限的散射体,文中推导了水声信号到达角的概率密度函数、时间自相关函数以及多普勒功率谱密度的表达式,并分析了其几项主要参数对信道统计特性的影响。文中根据假设的参考模型提出了SOC(Sum of Cisoids) 水声信道模型,以及所需参数的两种有效计算方法,并对二者的性能进行了比较。该研究拓宽了水下无线信道建模的研究方向,并且很大程度地减少了数值计算开支,降低了模型的设计与仿真的复杂度。

关键词: 概率密度函数, 功率谱密度, 几何信道模型, 水声信道, 自相关函数

Abstract: In this paper,the line-of-sight and no-line-of-sight environment of wireless communication channel in underwater acoustic communication environment was studied.A geometric reference model was introduced and related models were designed.Assuming that an unlimited number of scatterers are uniformly distributed on a two-dimensional vertical cross section in 3D underwater space,this paper deduced the signal arriving time probability density function,time autocorrelation function and theexpression of Doppler power spectral density,and analyzed the influence of several main parameters on the channel statistics.According to the assumed reference model,the Sum of Cisoids(SOC) underwater acoustic channel model and two effective calculation methods for the required parameters were proposed,and their performance was compared.The research broadens the research direction of underwater wireless channel modeling,greatly reduces the computational cost,and reduces the complexity of design and simulation of model.

Key words: Autocorrelation function, Geometric channel model, Power spectral density, Probability density function, Underwater acoustic channel

中图分类号:

TN911.6

吴鹏, 周杰, 陈姜高路. SOC水声信道模型及其计算方法研究[J]. 计算机科学, 2018, 45(8): 94-99. https://doi.org/10.11896/j.issn.1002-137X.2018.08.017

WU Peng, ZHOU Jie, CHENG Jiang-gao-lu. Research on Underwater Acoustic Channel Model and Its Calculation Method Based on SOC[J]. Computer Science, 2018, 45(8): 94-99. https://doi.org/10.11896/j.issn.1002-137X.2018.08.017

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SOC水声信道模型及其计算方法研究

Research on Underwater Acoustic Channel Model and Its Calculation Method Based on SOC

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