MAX9814芯片在MFSK水声通信抗幅度衰落中的应用  

Application of chip MAX9814 in MFSK underwater acoustic communication anti-amplitude fading processing

作　　者：李爽 邱逸凡 童峰[1,2,3] Li Shuang;Qiu Yifan;Tong Feng(Key Laboratory of Underwater Acoustic Communication and Marine Information Technique of the Ministry of Education,Xiamen University,Xiamen 361005,China;College of Earth and Ocean Sciences,Xiamen University,Xiamen 361005,China;Shenzhen Research Institute,Xiamen University,Shenzhen 518000,China)

机构地区：[1]厦门大学水声通信与海洋信息技术教育部重点实验室,福建厦门361005 [2]厦门大学海洋与地球学院,福建厦门361005 [3]厦门大学深圳研究院,广东深圳518000

出　　处：《电子技术应用》2021年第2期41-44,共4页Application of Electronic Technique

基　　金：国家自然科学基金(11274259);装备预研声纳技术重点实验室基金(6142109180303);深圳虚拟大学园扶持经费研发机构建设项目(YFJGJS1.0)。

摘　　要：在集群海洋观测、海洋物联网(IoT)等应用对低成本、小尺寸水声通信设备的需求日益广泛。低复杂度、高可靠性的多进制移频键控(MFSK)调制提供了一种有效的技术方案。针对水声信道恶劣时-空-频变特性给MFSK水声通信带来的严重幅度衰落,采用芯片MAX9814带有的自动增益控制功能对MFSK水声通信进行抗衰落处理,具有小尺寸、高集成的特点。浅海信道海试实验结果表明,采用MAX9814芯片够有效地抑制水声信道所造成的幅度衰落,改善水声通信性能。With the rapidly increasing interests in ocean observation and ocean Internet of Things,low-cost underwater acoustic communication equipment draws more and more attention from the research community.The low complexity and high reliability multi frequency shift keying(MFSK)modulation provides an effective technical solution.However,the typical time-space-frequency characteristic of the underwater acoustic channel will cause severe amplitude fading to the MFSK underwater acoustic communication.Considering that the chip MAX9814 has a large-range automatic gain adjustment capability,it is adopted for anti-fading processing of underwater MFSK communication.The experimental results show that MAX9814 can effectively suppress the amplitude fading caused by the underwater acoustic channel,thus improve the performance of the underwater acoustic MFSK communication.

关 键 词：频率选择性衰落 MAX9814 抗衰落处理 

分 类 号：TN929.3[电子电信—通信与信息系统]