OFDM技术论文.doc

论文名称:OFDM技术
OFDM技术
摘要:通过对OFDM调制技术的研究,目的重点在于了解OFDM技术的原理,包括OFDM系统模型、正交性原理、调制解调技术、系统性能以及OFDM系统的优点和缺点。
首先通过引言对OFDM技术的发展背景、基本思想、现状和未来展望进行了简单介绍。然后详细介绍了OFDM技术的基本原理,比如OFDM系统的FFT实现、OFDM系统模型、OFDM信号的调制与解调、OFDM信号的正交性原理,这部分利用公式或者图来说明。其次,说明了OFDM的系统性能,包括OFDM系统的抗脉冲干扰、抗多径传播与衰落的能力和频谱利用率等。最后说明了OFDM系统的优点和缺点。
关键词:正交频分复用;基本原理;系统性能;优缺点
The technology research of OFDM
Abstract:Through the research of OFDM modulation technology, this paper is key to understand how the principle of OFDM, including the OFDM system model and the orthogonality principle, demodulation technology, system performance and the advantages and disadvantages of OFDM systems.
Firstly, through the introduction of the development of the technology of OFDM background, basic thoughts, the present situation and the outlook for the future is simply introduced. And then introduces the basic principles of technology OFDM, such as OFDM systems, OFDM system model to realize FFT, OFDM signal modulation and demodulation, OFDM signal orthogonality principle, this part USES formula or diagram to explain. Second, that the OFDM systems performance, including OFDM systems of impulse noise, the resistance, the ability munication and decline diameter and the utilization efficiency of spectrum. Finally shows the OFDM systems advantages and disadvantages.
Key words: Orthogonal frequency division multiplexing; Basic principle; The performance