-
802.11a simulink
基于WiFi 802.11a协议的无线通信系统的开发
端到端的802.11a的物理层，自适应调制，前向纠错码，ofdm传输，高斯白信道仿真
Viterbi解码等(End-to-end 802.11a physical layer
* All mandatory and optional data rates: 6, 9, 12, 18, 24, 36, 48, and 54 Mb/s
* BPSK, QPSK, 16-QAM, 64-QAM modulations
* Forward error correction coding (convolutional; code rates 1/2, 2/3, 3/4)
* OFDM transmission: 52 subcarriers, 4 pilots, 64-pt FFTs, circular prefix
* Data interleaving
* PLCP preamble (modeled as 2x2 long training sequences; see below)
* Receiver equalization
* Viterbi decoding
* Data rates selectable on-the-fly
* Adaptive modulation demo over dispersive multipath fading channel)
- 2018-03-05 20:17:59下载
- 积分：1
-
SARReturnWaveSignal
基于FFT的快速SAR分布目标回波模拟算法.
大面积分布目标的合成孔径雷达(SAR)回波模拟需要大量的运算，文中提出了一种合成孔径雷达回波模拟的快速算法，算法利用时域插值和FFTl’来缩减运算量，对于大面积目标回波模拟时，该算法有很高的效率。文中详细分析sinc函数插值所带来的误差以及补偿方法，并在次基础上提出了一种利用增采样插值方法，该方法以增加少量运算为代价，使得模拟精度的大幅度提高。文中比较了传统方法和基于FFTl’的快速SAR分布目标回波模拟算法的模拟结果，证明了这种快速算法确实行之有效。(The simulation of distributed targets is very important to the design of synthetic aperture radar(SAR)sys-
tems．Since the end product is SAR images，the echo of SAR signals needs to be simulated and then processed form SAR images，an d the parameters needs to be measured and the perform ance of the images should be，an d then evaluated．The designing parameters of SAR could be adjusted to meet the requirement of users before developing SAR systems，specially
in space—bome SAR systems．Th e simulation data is also needed during the developing an d debugging of a space—borne SAR real—time processor．Another purpose of simulation is to supply a great deal of simulation imag es to train image usors of space—bo rne SAR before it launch．)
- 2009-07-07 22:42:14下载
- 积分：1
-
applecms
苹果cms精信采集包和整合包资源超全 应有尽有(Apple CMS acquisition package and package of grey resources over the whole of everything)
- 2017-10-27 14:47:53下载
- 积分：1
-
网络效率
说明： 对于复杂的网络系统，可以很好的计算网络效率(For complex network systems, network efficiency can be well calculated)
- 2020-12-29 15:59:00下载
- 积分：1
-
myLMsarsem_panel
说明： 修改的myLMsarsem_panel.m，用于LM检验和moran‘s I检验(This code myLMsarsem_panel.m was revsised by adding Moran's I test, it is for LM test and Moran's I test.)
- 2017-08-25 11:37:34下载
- 积分：1
-
使用Visual C++代码基于交通咨询哈夫曼源有限公司准备
用Visual C++编写的基于Haffman编码的交通咨询源码，直接打开工程文件即可-Prepared using Visual C++ code based on the Transport Advisory Haffman source code, open the project file can be directly
- 2022-07-15 18:49:37下载
- 积分：1
-
Refractive index
基于sellmeier方程产生的折射率，可通过改变材料的sellmeier系数，来计算材料的折射率。(Based on the refractive index generated by the sellmeier equation, the refractive index of the material can be calculated by changing the sellmeier coefficient of the material)
- 2017-09-17 09:30:59下载
- 积分：1
-
dvancED_Flash_Interface_Design_-_FriendsofED
AdvancED Flash Interface Design by Michael Kemper, Guido Rosso, Brian Monnone. Learn all the most sought-after visual effects for Flash interface animation and design. All techniques are industry tested for optimal quality and production time. Include complete Flash video primer!
- 2010-03-03 19:54:23下载
- 积分：1
-
在线答题考试系统下载
说明： jQuery在线答题考试系统下载是一款以答题卡为主，左边是题目，右边是答题卡。(JQuery Online Answer Examination System downloads an Answer Card, left is the topic, right is the Answer Card.)
- 2019-04-09 11:45:46下载
- 积分：1
-
广义表的实现用vc
广义表的实现用vc-generalized table with the realization vc
- 2022-03-15 05:49:18下载
- 积分：1
