基于DSP的OFDM调制解调技术研究

Research on OFDM Technology based on DSP

文章介绍了正交频分复用技术的主要特点,对正交频分复用调制解调原理进行了详细的分析,提出了一种基于数字信号处理器硬件平台的正交频分复用调制解调实现方法,这种方法以离散傅立叶变换及逆变换为数学基础,利用数字信号处理器在运行这两种算法时的高效性来实现。通过性能仿真比较,该调制解调技术比传统的频分复用技术有较高的频谱利用率和抗干扰能力。

This paper describes the main features of OFDM, analyzes in detail the principle of OFDM. The OFDM implementation method based on DSP hardware platform is proposed. This method takes DFT and IDFT as its mathematical basis, and makes full use of the great efficiency by DSP in running these algorithms. According to the simulation, the spectrum efficiency and anti interference ability of this modulation/demodulation technology is better than that of traditional FDMA.