FH/OFDM通信系统发射单元的研制  

Design and Implementation of FH/OFDM Transmission Unit

作　　者：熊俊俏[1] 沈浩[1] 杨志方[1] 

机构地区：[1]武汉工程大学电气信息学院,湖北武汉430073

出　　处：《通信技术》2010年第8期82-83,86,共3页Communications Technology

基　　金：湖北省教育厅科学研究计划资助项目(编号:D20091503)

摘　　要：采用ALTERA公司推出的CycloneⅡ2C35芯片,完成基于802.11.A协议规范的OFDM技术的编码、调制功能,并采用AD9856实现上变频,通过NiosII软核处理器进行系统控制和跳频频率设置;系统设计首先通过MATLAB系统仿真,并经C语言编译移植到NiosⅡ系统运行,系统在编码格式、调制制式、及信道模型等可任意设置,该发送单元不仅能满足OFDM通信系统发射单元的实时仿真,同时也是一种通用的软件无线电仿真平台。测试结果表明:该系统具有体积小、系统配置升级方便、数据处理速度快、以及实时性强的优点。The simulation platform for FH/OFDM transmission unit is first simulated by MATLAB, then compiled by C language, and finally transplanted to the Nios Ⅱ system. This system could be willfully set up in coding format, modulation pattern and channel model by FPGA. The establishment of system control and the frequency-hopping frequency is controlled by the Nios II soft-nuclear processor, and Upconverter is realizated by AD9856. The transmission unit could satisfy the real-time simulation of FH/OFDM system, and also is a general simulation platform for SDR（software defined radio）.The experiment result indicates that, the system is of such superiorities as small volume, easy system configuration and upgrade, fast data processing and strong real-time performance.

关 键 词：正交频分复用 跳频 上变频 软件无线电 

分 类 号：TN914.41[电子电信—通信与信息系统]