-
biyesejitognxinxitong
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理部分，即调制解调器。其中发射部分的调制
器包括：信道编码（Reed-Solomon 编码），交织，星座映射，FFT和插
入循环前缀等模块。我另外制作了相应的解调器，可以实现上述功能的逆
变换。
另外，我还对OFDM技术， IEEE 802.11a的标准文献，基于Simulink
的 OFDM 模型和仿真，ALTERA 公司的技术和 IP Core 的使用等方面进
行了研究。这些在文章中都有体现。
(Abstract
Orthogonal frequency division multiplexing (OFDM, Orthogonal the Frequency Division,
Multiplexing) is a very popular communication technology. It can be seen as a
Modulation technique can also be seen as a multiplexing technique. Because of its resistance to multipath fading and spectrum
High utilization characteristics, and is widely used in high-speed digital communications, such as used in IEEE
802.11a wireless LAN (WLAN) physical layer.
The core mission of my graduation project: FPGA to implement a technology based on OFDM
Communication systems in baseband data processing part, ie the modem. These emission part of the modulation
Includes: channel coding (Reed-Solomon coding), interleaving, constellation mapping, FFT and interpolation
Into the cyclic prefix modules. I also produced a corresponding demodulator can achieve the inverse of the above functions
Transformation.
In addition, OFDM technology, the IEEE 802.11a standard literature, based on Simulink
)
- 2012-05-20 21:58:18下载
- 积分：1
-
Answer-true-through-IT-students
这是一部写给在校计算机专业学生的书
如果没有看到这本书
你可能会茫然无措的度过学习阶段(This is a book written for computer major students
If you don t see this book
You may be at sea through the learning phase)
- 2013-08-05 17:28:15下载
- 积分：1
-
Diagnosis-and-Fault-Tolerant-Control
In this work we introduce a recent implicit fault tolerant control technique for the permanent magnet synchronous machine. After a state of the art in the FTC domain, we elaborate the complete model of the machine witch allow to study its behavior in different cases. The unknown torque load and parametric variations are compensated by the robust backstepping control low but in order to detect and compensate faults, we use this technique witch we study in detail. We also propose a new method for generating compensation terms in the control low.
- 2012-05-09 23:41:05下载
- 积分：1
-
xiaomuchkeyanjinghua
小木虫最新科研精华贴，对硕博生有很多的作用，很不错的资料哦(Wooden stick insect essence of the latest research on the role of Shuobo students have a lot of very good information Oh)
- 2013-11-13 17:19:49下载
- 积分：1
-
MaTeyou-CFD
马铁犹-计算流体动力学，一本介绍CFD很好的书，希望大家有用(Ma Teyou-CFD, hope the book can help you.)
- 2010-12-17 09:57:31下载
- 积分：1
-
Control-Strategy
。归纳和讨论了智能微电网的控制理论，将控制策略划分为电网跟随控制和电
网形成控制两大类，每一类同时又包含了交互式及非交互式控制思想，给出了清晰的定义和判断标准，
并提出智能微电网控制策略未来的发展方向。(Analysis was made to its system configuration
and operation characteristics, the control theory of intelligent microgrid summarized and discussed to divide the control
strategy into grid-following and grid-forming control two categories, each of which included interactive and non interactive control
thinking with clear definition and determinant standard. This paper raised the microgrid control strategy in the future.)
- 2012-07-16 21:10:26下载
- 积分：1
-
SIM868_RF_Design_Application Note_V1.00
SIM868_RF_Design_Application Note_V1.00.pdf
- 2018-10-29 19:53:29下载
- 积分：1
-
lid driven flow
Lbm用于模拟顶盖驱动流 强制对流 碰撞迁移过程(LBM for lid driven flow)
- 2021-03-31 22:39:08下载
- 积分：1
-
US-TTNT
较为详细地说明了美军战术数据链现状与最新发展，供大家学习和交流。(A more detailed description of the status of U.S. military tactical data link with the latest developments, for them to learn and exchange.)
- 2014-02-16 23:25:00下载
- 积分：1
-
How_To_Write_A_PhD_Thesis_WoeWolf_UNSW
article on how to write a thesis
- 2009-04-28 00:13:22下载
- 积分：1
