CAJ | 학술논문

短波通信是远距离信息传输的重要手段,OFDM（正交多载波调制）是一种在无线环境下具有较高频谱利用率的多载波调制技术。将OFDM技术应用于短波通信中,搭建了OFDM的试验平台,建立了短波通信链路,对接收端采集的基带OFDM信号进行了处理。通过编码和信道估计分别对信号进行纠错和信道补偿,处理结果表明,在传输速率600 b/s下系统的误比特率达到10^-5数量级,系统性能良好。
단파통신시원거리신식전수적중요수단,OFDM（정교다재파조제）시일충재무선배경하구유교고빈보이용솔적다재파조제기술。장OFDM기술응용우단파통신중,탑건료OFDM적시험평태,건립료단파통신련로,대접수단채집적기대OFDM신호진행료처리。통과편마화신도고계분별대신호진행규착화신도보상,처리결과표명,재전수속솔600 b/s하계통적오비특솔체도10^-5수량급,계통성능량호。
Shortwave communication has been one of the most important method of long distance commu-nication,and the OFDM（Orthogonal Frequency Division Multiplexing） is a multi-carrier modulation technique which can make good use of frequency spectrum in wireless environment.OFDM to shortwave communication is applied and the shortwave communication path between Xinxiang and Qingdao on the basis of AD9957 board is established.Through processing the baseband OFDM signal at reception,the result indicates that the system performance is well by applying the coding and channel estimation tech-niques,the Bit Error Rate（BER） reaches 10^-5 under the transmission rate 600 bps.