基于simulink的OFDM技术研究与分析
首发时间:2009-06-04
摘要:正交频分复用(OFDM) 是第四代移动通信的核心技术,它是实现宽带无线通信和多媒体业务发展的基础。对OFDM技术的基本原理,关键技术以及实现进行了研究,并且通过matlab中的通信仿真系统simulink对OFDM系统进行了模拟和分析,直观和形象地得到了OFDM系统在时域和频域的传输性能,得出的结果表明OFDM系统可以明显地表现出抗多径效应引起的频率选择性衰落和提高了频谱利用率,这一特性使得它能够在高数据传输速率的无线信道中发挥优势。
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Analysis and Research of OFDM Technology Based on Simulink
Abstract:OFDM is the key technology of the 4th generation mobile communication system. It is the foundation of implement of broadband wireless communication and multimedia technology. The principle and implement of OFDM is researched in the paper. By the simulation and analysis of OFDM using the matlab tool simulink, we get the transmission performance of time and frequency domain visually. The result indicates that OFDM can play an important role in anti frequency selective Fading led by multipath effect and improve frequency spectrum using .This special character makes it become superior in the high data transmission rate wireless channel.
Keywords: OFDM SIMULINK sub-carrier string and parallel conversion
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