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

Abstract

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

CLC Number:

TN911.6

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.

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