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1、简介2、原理3、系统框图及结构核心4、主要优点5、数字电视广播中的应用1、OFDM技术简介正交频分复用(OFDM)是一种特殊的多载波传输方案,它可以被看作一种调制技术,也可以被看作一种复用技术。OFDM技术的最大优点是对抗频率选择性衰落或窄带干扰,同时又提高了频谱利用率。传统的FDM与OFDM带宽利用率比较如图1所示。
1. Introduction 2. Principle 3. System Block Diagram and Structure Core 4. Main Advantages 5. Application in Digital Television Broadcasting 1. Introduction to OFDM Technology Orthogonal Frequency Division Multiplexing (OFDM) is a special multi-carrier transmission scheme Can be seen as a modulation technique, but also as a multiplexing technique. The biggest advantage of OFDM technology is to combat frequency selective fading or narrowband interference while improving spectral efficiency. Traditional FDM and OFDM bandwidth utilization as shown in Figure 1.