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on-the-modulation-technology-in-OFDM
在 OFDM 数学原理和收发模型的基础上，本文对帧同步、定时同步、频率同
步和采样同步给 OFDM 系统所产生的影响进行了理论分析，同时讨论了基于循环
前缀或训练符号的典型 OFDM 同步算法。参考 802.11a 突发数据帧结构和系统参
数，分析几种 OFDM 同步算法用于突发分组传输的性能；在分析了几种经典的信
道估计算法基础上,通过对复杂度和性能的折衷，选择一种适合本文系统的估计
算法。最后作者提出一种改进型 LS 信道估计算法，该算法考虑了 LS 算法中噪声
的影响，从而提高了低信噪比下信道估计的精度。仿真结果表明，改进算法在低
信噪比下具有良好的性能。
(OFDM mathematical principles and transceiver model based on frame synchronization, timing synchronization, frequency synchronization and sampling synchronization to the OFDM system, the impact of the theoretical analysis are also discussed based on the cyclic prefix or training symbols typical OFDM synchronization algorithm . Reference 802.11a burst data frame structure and system parameters, analyze several OFDM synchronization algorithm for burst packet transmission performance several classic channel estimation algorithm based on a compromise between complexity and performance, select a suitable estimation algorithm in this article. Finally, the author proposed a modified LS channel estimation algorithm that takes into account the effects of noise in the LS algorithm, thus improving the low SNR channel estimation accuracy. Simulation results show that the improved algorithm has good performance in low signal-to-noise ratio.)
- 2013-05-10 15:18:30下载
- 积分：1
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YouToo
说明： sip开发相关资料集,为sip开发人员提供了很丰富的资料,适合初学者.
- 2010-03-23 17:00:26下载
- 积分：1
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MIMO
mimoBPSK理论误码率以及实际误码率仿真(MimoBPSK theory bit error rate, and actual BER simulation)
- 2021-03-21 22:39:16下载
- 积分：1
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duopulebuchang
进行信号积累时，有的信号存在多普勒频率，不利于累加。该程序可完成对信号多谱勒频率的补偿。(Signal accumulation, some signal Doppler frequency, is not conducive to the accumulation. The program can be complete compensation of the signal Doppler frequency.)
- 2012-10-30 14:03:45下载
- 积分：1
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20070313_synchronizationMutex
同步机制的解决方法之一(one of the solutions)
- 2007-04-06 11:59:02下载
- 积分：1
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VJSRU
易语言D2D物理效果源码,很不错的易语言源码,适合易语言爱好者学习,(Easy language D2D physical effect source code, very good easy language source code, suitable for easy language lovers to learn,)
- 2018-08-12 13:57:57下载
- 积分：1
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Transmit_beamforming
一个波束形成的例子，比较了在瑞利信道中使用波束成形和不使用波束成形的误码率。(An example of beamforming is made to compare beamforming and without beamforming bit error rate in Rayleigh channel.)
- 2018-04-17 13:25:10下载
- 积分：1
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RFC826
中文RFC文档，不用翻译，对大家学习很有帮助！(Chinese RFC documents, without translation, the right to study very helpful!)
- 2005-04-12 13:23:37下载
- 积分：1
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Coherent-QPSK-VPI
用VPI搭建的相干QPSK调制解调全程序，是一个成功的光学实验调制程序。(Coherent QPSK simulation by using VPI transmission maker, a good experimental code.)
- 2011-05-13 08:17:10下载
- 积分：1
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yy
卫星信道信道估计的matlab仿真程序，对不同的插值算法给出比较输出并画出误码率-信噪比曲线(Satellite channel channel estimation matlab simulation program, different interpolation algorithms and draw the comparison output is given BER- SNR curve)
- 2021-02-22 16:59:41下载
- 积分：1
