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Multi-User-Diversity-vs
In a multiple transmit antenna, single antenna per receiver downlink channel with limited channel state feedback, we consider the following question: given a constraint on the total system-wide feedback load, is it referable to get low-rate/coarse channel feedback from a large number of receivers or high-rate/high-quality feedback from a smaller number of receivers? Acquiring feedback from many receivers allows multi-user diversity to be exploited, while high-rate feedback allows
for very precise selection of beamforming directions. We show that there is a strong preference for obtaining high-quality feedback, and that obtaining near-perfect channel information from as many receivers as possible provides a significantly larger sum rate than collecting a few feedback bits from a large number of users.
- 2013-11-08 12:10:41下载
- 积分：1
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cic
在信号处理中，信号发射时，信号通过载波，调制，以电磁波的形式发射出来
在接收端，射频信号通过天线接收，超外差式等方式进行处理，变频到中频
然后通过数字技术对中频信号进行处理，此时的中频信号采样率很高，多达几十兆赫
而要解调出来的信号很小，此时就要经过滤波来得到我们需要的信号
如果直接设计滤波器，阶数会非常庞大，软件，硬件设备都承受不了
因此，一般常用的技术是进行下变频处理，其主要技术就是通过抽取滤波进行下变频
常用的滤波器就是CIC抽取, 希望可以帮助一些坛友解决基本的问题。
(In signal processing, signal emission, signal through the carrier, in the form of electromagnetic wave modulation, launched
In the receiver, rf signals through the antenna, specialized superheterodyne type means such as processing, the frequency conversion to intermediate frequency
Then through digital technology of intermediate frequency signal processing, at this time of intermediate frequency signal sampling rate is very high, as many as several decades MHZ
But the signal demodulation out is very small, at this time would be passing filter to get what we need signal
If design directly filter, order number be colossal, software, hardware equipment all suffer
Therefore, the technology is usually used for down-transducer processing, its main technical is by extracting filtering down-transducer
Commonly used filter is CIC extraction, the hope can help some friends solve basic problems of the altar.)
- 2011-01-16 21:57:08下载
- 积分：1
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OFDM_Documents
這是最新OFDM的完整文件教材
是目前國內許多教授授課時使用的
內容很充實，從OFDM的原理到同步、調變、數位電視，都有完善的說明(This is the latest OFDM complete documentation is currently teaching professors teach the use of the content is very rich OFDM from the principle of synchronous modulation, digital TV, a comprehensive note)
- 2006-12-12 16:30:03下载
- 积分：1
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Runge_Kutta
编写四阶 Runge_Kutta 公式的计算程序，对线性状态方程进行仿真
(Preparation of fourth order Runge_Kutta formula calculation procedures, the linear equation of state for simulation)
- 2013-11-08 15:06:52下载
- 积分：1
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灰色系统理论建模源代码 张
灰色预测是就灰色系统所做的预测。所谓灰色系统是介于白色系统和黑箱系统之间的过渡系统。其具体的含义是:如果某一系统的全部信息已知为白色系统，全部信息未知为黑箱系统，部分信息已知，部分信息未知，那么这一系统就是灰色系统。(Grey prediction is the prediction of grey system. The so-called grey system is a transitional system between the white system and the black box system. Its concrete meaning is: if all information of a system is known as a white system, all information is unknown as a black box system, some information is known, and some information is unknown, then this system is a grey system.)
- 2020-06-18 02:20:02下载
- 积分：1
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cdhmm
用matlab实现的一个连续概率分布的HMM程序，可以结合《MATLAB扩展编程》一书中关于HMM的介绍(Using matlab to achieve a continuous probability distribution of the HMM program, you can combine MATLAB programming expansion, a book on the introduction of the HMM)
- 2007-11-07 20:20:40下载
- 积分：1
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RectWave
矩形波路径规划算法，从起始点通过用矩形波传递到达目标点的方法来获得连通路径。适用于已知地形的栅格图。(Rectangular wave path planning algorithms, from the starting point by using the rectangular wave transmission methods to reach the target point to get connectivity path. Applicable to the known topography of the grid map.)
- 2008-03-18 20:12:26下载
- 积分：1
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P-Q-power-flow
matlab代码，实现P-Q解耦法潮流计算(matlab code to achieve the PQ decoupled power flow calculation method)
- 2011-08-25 11:16:45下载
- 积分：1
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Simulation-Matlab
matlab simulation for TL and cable
- 2013-10-30 03:28:11下载
- 积分：1
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RLSMATLAB
这是一种使用matlab语言实现的RLS自适应算法程序。(the realization of RLS algorithm)
- 2013-05-15 21:34:08下载
- 积分：1
