基于MCCDMA技术的水声通信调制解调系统

PDF全文下载：20160100097

 秦端振

(青岛科技大学 信息科学技术学院，山东 青岛 266061)

 摘要： 水声通信由于其信道延迟大、带宽窄、干扰多等特点而发展缓慢，为了实现高质量、长距离的水下无线通信，通过对CDMA（码分多址）、OFDM（正交频分复用）等多种通信技术的分析和对比，基于FPGA平台建立了一种比较先进的水声通信调制解调系统。该系统采用MCCDMA技术，设计了一种基于Gold序列的信号扩频办法，采用FFT/IFFT模块实现OFDM调制解调，该系统通过了水槽实验环境的测试，运行稳定。

 关键词： 水声通信； 码分多址； 正交频分复用； MCCDMA

中图分类号：TN 929.3            文献标志码： A

  Hydroacoustic Communication System Based on MCCDMA Technology

 QIN Duanzhen

 (College of Information Science and Technology, Qingdao University of Science and Technology, Qingdao 266061, China)

Abstract: The hydroacoustic communication developed slowly because of its intrinsic features, such as large channel delay, narrow bandwidth, multiinterference, and so on. In order to high quality and long distance underwater wireless communication, based on the comparison and analysis of CDMA (Code Division Multiple Access) and OFDM (Orthogonal Frequency Division Multiplexing), an advanced underwater acoustic communication modulation demodulation system has been set up, which based upon a FPGA platform and MCCDMA technology. A method based on Gold Sequence has been designed to spread the signal spectrum, and the OFDM modulation has been realized using FFT/IFFT module. The  experiment in water channel prove that the system has stable performenles.

 Key words: hydroacoustic communication；code division multiple access  (CDMA)；orthogonal frequency division multiplexing (OFDM)； MCCDMA

 收稿日期： 20140818

作者简介： 秦端振（1984—），男，讲师.

文章编号： 16726987（2016）01009705； DOI： 10.16351/j.16726987.2016.01.020