中文说明：应用背景正交频分复用（OFDM）被选为无线通信的调制技术。OFDM能提供充分大量数据传输在有损耗的无线电信道内。世界上许多研究中心成立了专门的工作组为了实现OFDM的最优化。在乔治尼亚的科技研究所中，其中的一个工作组在SARL，GCATT的一部分。这篇文章的目的是为了提供MATLAB源码去仿真OFDM信号的产生和接受所涉及到的过程在物理层上，并且提供涉及到的涉及到的每一步的描述。关键技术OFDM最吸引人是因为这个系统可以克服多径干扰在接收端。多径干扰产生两个影响：频率选择性衰落和符号间干扰。一个窄带信道的平台克服了前者，低速率的调制可以使得记号更长比信道冲击响应，消除了后者。
English Description：
Application backgroundOrthogonal frequency division multiplexing (OFDM) is chosen as the modulation technique for wireless communication. OFDM can provide sufficient data for transmission in a lossy wireless communication channel. Many research centers in the world have set up a special working group to realize the optimization of OFDM. In the George Institute of technology, one of the working groups in SARL, GCATT. The purpose of this article is to provide matlab source to the simulation of OFDM signal generation and acceptance of involved in the physical layer, and provide involves the involves the every step description.Key TechnologyOFDM is the most attractive because this system can overcome the multipath interference in the receiving end. Multipath interference has two effects: frequency selective fading and inter symbol interference. A narrow band channel is overcome by the platform, and low rate modulation can make the mark longer than