基于优化的水声信道干扰消除技术研究

项目名称： 基于优化的水声信道干扰消除技术研究

项目编号： No.61471309

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 孙海信

作者单位： 厦门大学

项目金额： 85万元

中文摘要： 本项目是基于最优化理论的稀疏水声信道载波频率偏移和脉冲干扰的估计消除方法及其在水声通信系统和水声网络中的应用研究。主要研究内容有： ① 基于空载波的大时延扩展水声多径信道中的载波频率偏移与水声信道的高分辨率、低复杂度估计算法的理论分析。 ② 基于最优化理论在混合域尖峰噪声情况下的干扰消除估计算法分析与仿真。 ③ 基于空载波的载波频率偏移和混合域尖峰干扰的联合估计算法的理论分析与仿真试验，基于不同的优化方案，实现各种最优化理论算法与仿真分析。 ④ 基于多用户的载波干扰和混合域尖峰干扰估计算法在协作分集网络中的理论与仿真试验分析。 ⑤ 最优化理论在水声通信系统中噪声抑制中的应用。构建高速水声通信系统，其传输速率不低于5kbps，误码率不高于0.001，同时应用于协作分集的水声网络通讯系统,构建一个高精度协作分集的水声网络。

中文关键词： 水声信道；载波干扰；信道均衡；信道估计

英文摘要： This project investigated the menthod which based on the maximum optimation about carrier frequency offset and large scale interefence in different domain estimation in acoustic multi-path channels and the application in underwater acoustic communication systems and underwater acoustic network.The main contents include: Firstly, the theorical analysis of CFO by using lower complexily and high resolution method based on the long delay and multi path underwtater acoustic channel. Sceondly, the algotithm simulation and analysis of interference cancallation about big scale noise in different domain based on the maximum optimization. Thirdly, the algorithmn and simulation about joint carrier frequency offset and large scale noise estimation for underwater acoustic OFDM with null subcarrier was studied. Different methods are proposed to joint estimate the CFO and big scale noise by using different optimal equation. Fourthly, the analysis and simulation about multi-users carrier interference cancellation and big scale noise interference in cooperation network. At last, the application of interference cancellaion in undewater acoustic communication syatem. Then,the system speed is no less than 5kbps and the value of BER is less than 0.001. Finally, the system was used in the cooperation network communication.

英文关键词： acoustic channel;frequency interference;channel equlization;channel estimation