摘要
正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术具有很强的抗多径能力及较高的频谱利用率,能在无线信道中提供可靠的高速数据传输,是未来通信系统的主流技术之一,例如LTE、WiMax等新兴标准都利用OFDM调制技术进行下行数据传输。同时,OFDM技术对接收系统的同步精度要求严格,因此同步技术是实现OFDM通信系统的关键技术之一。文中对OFDM同步技术进行了深入研究,利用FPGA平台设计完成了基于Schmidl同步算法的OFDM通信接收系统,并利用真实仿真平台进行了仿真验证。
OFDM （Orthogonal Frequency Division Multiplexing） technology is the mainstream technology of the fourth- generation wireless communication with a strong resistance to the muhipath fading and high spectral efficiency, which could provide a reliable high-speed data transmission in wireless channel. LTE, WiMax and other emerging communication standards all adopt OFDM technology for downlink transmission. As OFDM technology requires accurate synchronization for the receiving system, synchronization technique is one of the key technologies to achieve the OFDM communication system. The synchronization technology is analyzed in-depth in this paper, FPGA is used to design and complete OFDM communications receiver system with SC synchronization algorithms, testing and certification these receiving system by its simulation.
出处
《信息安全与通信保密》
2014年第3期110-112,共3页
Information Security and Communications Privacy
