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中文摘要
正交频分复用( OFDM , Orthogonal Frequency Division
Multiplexing)是当前一种非常热门的通信技术。它即可以被看作是一种
调制技术,也可以被看作是一种复用技术。由于它具有抗多径衰落和频谱
利用率高的特点,因此被广泛应用于高速数字通信领域,比如应用于IEEE
802.11a无线局域网(WLAN)的物理层等等。
我的毕业设计的核心任务是:采用 FPGA 来实现一个基于OFDM 技术
的通信系统中的基带数据处
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目前已经提出了许多不同的算法来解决OFDM 系统中的PAPR 问题,本章详
细介绍了其中的限幅法、压缩扩张法、星座图扩展法、选择性映射法和部分传输
序列法。在介绍每一种算法时,针对其主要存在的问题进行了相应的改进,使每
一种算法都成为比较实用的算法。-Has put forward a number of different algorithms to solve the problem PAPR OFDM system, this chapter details
Fine d
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To plot a 16-QAM signal constellation with annotations that indicate the mapping integers to constellation points. The code uses the scatterplot function to create the plot and the text function in MATLAB to create the annotations. We follow the foll
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Trellis coded modulation (TCM) is a well known
scheme that reduces power requirements without any bandwidth
expansion. In TCM, only certain sequences of successive
constellation points are allowed (mapping by set partitioning).
The novel idea
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The paper deals with the Matlab implementation and simulation of channel coding
and modulation of DVB-T (Digital Video Broadcasting – Terrestrial). Transport
stream multiplex adaptation and randomization for energy dispersal, outer coding
and i
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