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Description: 文章中研究了OFDM系统的时间同步问题，分析了系统的时间偏差容忍度-Research article in the OFDM system, time synchronization problems, analysis of system time deviation tolerance
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Size: 489472 |
Author: 王云峰 |
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Description: 本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method.
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Size: 268288 |
Author: dajinyu |
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Description: 64路OFDM系统MATLAB仿真，采用桢头同步，信道编码采用（7，4）汉明码，信道估计及修正采用LS方法，峰均抑制采用直接削波的方法，希望对大家有所帮助。-64 Road OFDM system MATLAB simulation, using the first-ching synchronization, channel coding used (7,4) hamming code, channel estimation and the amendment to the use of LS method, peak-to-average direct clipping suppression method, and they hope to be helpful to everyone.
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Size: 6144 |
Author: xiaoyuer |
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Description: 这是一个非常好的用于OFDM的基于CP的 最大似然符号定时同步和载波同步的MATLAB仿真程序，经本人深入阅读吸收经典文献，反复编程调试而提炼而成，代码精炼有序，绝对没有错误，由此程序仿真得到的同步曲线与经典文献完全一致。同仁们阅读此程序一定受益匪浅！
这里不吝成果，特上载与诸位网友共享。也欢迎同仁们提供更多的优秀程序。
由于文献要求采用N＝1024个子载波的OFDM，运行此程序需2分钟－3分钟的时间。
-This is a very good CP for OFDM-based maximum likelihood symbol timing synchronization and carrier synchronization of the MATLAB simulation program, after I read the absorption of classical literature in depth, repeated programming and debugging derived, code refining orderly, absolute no mistake, this process has been synchronized simulation curve is fully consistent with classical literature. Tongren have read this procedure will definitely benefit! Spared the outcome here, especially to upload to share with you friends. Tongren also welcome to provide more excellent program. Documentation required as a result of N = 1024 sub-carrier OFDM, to run this process will take 2 minutes-3 minutes.
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Size: 1024 |
Author: 黄翔东 |
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Description: 通信经典书籍: Digital Communication Receivers Synchronization, Channel Estimation, and Signal Processing-Communication Classic Books: Digital Communication Receivers Synchronization, Channel Estimation, and Signal Processing
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Size: 45615104 |
Author: stevenchen |
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Description: 扩频通信中的同步研究，基于matlab的-Synchronization of spread spectrum communication research, based on the matlab
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Size: 1024 |
Author: 刘小云 |
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Description: 详细讲解了同步原理，包括载波同步、位同步、帧同步-Detailed account of the principle of synchronization, including the carrier synchronization, bit synchronization, frame synchronization
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Size: 307200 |
Author: wuqianye |
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Description: Gardner定时程序.rar:用于接收端的基带信号同步处理,非常实用-Gardner timing procedures. Rar: for the receiving end of the base-band signal synchronization, very useful
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Size: 17408 |
Author: 陈鹏 |
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Description: 值得深刻阅读的基于CP的OFDM同步程序
这是一个非常好的用于OFDM的基于CP的 最大似然符号定时同步和载波同步的MATLAB仿真程序，经本人深入阅读吸收经典文献，反复编程调试而提炼而成，代码精炼有序，绝对没有错误，由此程序仿真得到的同步曲线与经典文献完全一致。同仁们阅读此程序一定受益匪浅！ 这里不吝成果，特上载与诸位网友共享。也欢迎同仁们提供更多的优秀程序。 由于文献要求采用N＝1024个子载波的OFDM，运行此程序需2分钟－3分钟的时间。
-Worthy of profound reading of the CP-based OFDM synchronization process this is a very good CP for OFDM-based maximum likelihood symbol timing synchronization and carrier synchronization of the MATLAB simulation program, after I read the absorption of classical literature in depth, repeated programming and debugging extracted from the symbol of refined and orderly, there is no error, this procedure has been synchronized simulation curve is fully consistent with classical literature. Tongren have read this procedure will definitely benefit! Spared the outcome here, especially to upload to share with you friends. Tongren also welcome to provide more excellent program. Documentation required as a result of N = 1024 sub-carrier OFDM, to run this process will take 2 minutes-3 minutes.
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Size: 1024 |
Author: 张华 |
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Description: it is a simulation about ML synchronization algorithm in OFDM systems,you can slao see a function picture in its output,that s useful for a beginner
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Size: 6144 |
Author: 李明 |
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Description: ofdm符号同步算法-schmidl&cox算法的matlab实现-OFDM Symbol Synchronization Algorithm-schmidl
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Size: 1024 |
Author: |
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Description: cost273信道的建模，用于MIMO信道同步的仿真，性能很好，推荐下-cost273 channel modeling, synchronization for MIMO channel simulation, performance very good, the recommendation
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Size: 7168 |
Author: 刘云 |
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Description: linux下的多线程的创建及信号同步，信号量，互斥量-under linux to create multi-threaded and signal synchronization, semaphores, mutex volume
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Size: 26624 |
Author: wuqian |
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Description: 此程序是关于OFDM（正交频分复用）同步中信道响应的程序-This procedure is on the OFDM (Orthogonal Frequency Division Multiplexing) channel synchronization in response to the procedure
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Size: 2048 |
Author: 郭振红 |
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Description: OFDM同步中的PARK经典算法，有单径或多信道下的仿真，其他的子函数网上也可以找到-OFDM Synchronization PARK classic algorithms, there is a single track or multi-channel under the simulation, the other can also be found online Functions
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Size: 2048 |
Author: 胡位 |
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Description: OFDM同步定时程序，主要是Schmid和lPark定时算法。-OFDM timing synchronization process, the main Schmid and are regularly lPark algorithm.
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Size: 4096 |
Author: 张彩 |
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Description: OFDM系统同步中的定时估计算法，主要使用了极大似然估计法。此程序实现极大似然估计法定时的程序。-OFDM system, synchronization of timing estimation algorithm, the main use of maximum likelihood estimation method. Realize this procedure maximum likelihood estimation when the statutory procedures.
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Size: 3072 |
Author: 张彩 |
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Description: ofdm下的QAM调制解调系统实现，包括定时同步-QAM OFDM modulation and demodulation under the system implementation, including timing synchronization
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Size: 10240 |
Author: yanli |
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Description: 很好的OFDM的基于MATLAB的仿真程序包，且包含了最终结果图.-montecarlo
type montecarlo in the command window and wait for a long time..
_simulation of the complete OFDM system.
_use of a very large file in order to get probabilities.
_loop over different value of the noise.
_compute the SNR for each value of the noise.
_provide the SNR/BER plot.
if you are in a rush : simulation_system !!
go into the right folder and type simulation_system in the command window.
_then type the value of the noise power (range = [-20,10])
_the function provides the channel estimation, the bit allocation,
and a plot illustrating the errors.
_this is a fast function (less pilot, no synchronization, small file).
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Size: 96256 |
Author: 田静 |
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Description: 使用FPGA/CPLD设置语音AD、DA转换芯片AIC23，FPGA/CPLD系统时钟为24.576MHz
1、AIC系统时钟为12.288MHz，SPI时钟为6.144MHz
2、AIC处于主控模式
3、input bit length 16bit output bit length 16bit MSB first
4、帧同步在96KHz-The use of FPGA/CPLD set voice AD, DA conversion chip AIC23, FPGA/CPLD system clock for the 24.576MHz 1, AIC system clock is 12.288MHz, SPI clock is 6.144MHz 2, AIC is in master mode 3, input bit length 16bit output bit length 16bit MSB first 4, frame synchronization at 96KHz
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Size: 2048 |
Author: 张键 |
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