A New Underwater Acoustic Communication System Based on Fractional Fourier Transform

摘要：

A new underwater acoustic (UWA) communication system is proposed based on fractional Fourier transform (FRFT) for complex condition of underwater environment. Because of using chirp-basis function in FRFT, this communication mode uses linear frequency modulation (LFM) as carrier signal of transmitted information, which has good antijamming capability. The code elements were divided into groups in time-domain and the transmitted information was decoded by using pulse position modulation (PPM) in fractional domain in this scheme. The method of inserting guard interval (GI) in transmitted signal and the Rake receiver was presented to suppress the UWA channel’s multi-path effect which could lead to intersymbol interference (ISI). The information rate is up to 800bit/s and the feasibility and the robustness of this system were validated through the experimental results, which is helpful for UWA communication of Unmanned Underwater Vehicle (UUV) in complex working environment.

关键词： Fractional Fourier transform underwater acoustic communication pulse position modulation Rake receiver

作者: Yun Chen Ping Cai Yilin Wang

作者单位: Underwater Acoustic Technology Key Lab of Science and Technology for National Defense University of Underwater Acoustic Technology Key Lab of Science and Technology for National Defense University of

会议类型: 国际会议

会议名称: 2010 IEEE信息与自动化国际会议(ICIA 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 1-6

在线出版日期: 2010-06-20（万方平台首次上网日期，不代表论文的发表时间）