DIT_FFT

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.

matlab学习资料大全很好用，非常详细(matlab learning materials useful, very detailed)

Matlab编写的计算器，能实现普通计算器的各种功能(calculator in Matlab circumstance)

对初学matlab的有很大帮助 认真学应该能学好(right novice Matlab great help learning, we should be able to learn)

basic implementation of graphs in matlab

说明：  支持向量机用于分类问题的演示程序，分线性与非线性两部分(support vector machines for the demonstration classification procedures, sub-linear and nonlinear part 2)

Here s the code! Too many people ask for this Using this code you can save an image item as a jpeg image, specifying the quality of it. Jpeg quality is the same as compression so the lower the quality, the smaller the file size. It s simple to use(Here's the code! Too many people ask for this Using this code you can save an image item as a jpe g image, specifying the quality of it. Jpeg quality is th e same as compression so the lower the quality, the smaller the file size. It's simple to use)

2011建模夏令营b题第一问求解，内有有注释,关键字，覆盖，选址( )

语音识别，有数字0到9个音频文件，任选一个，程序会识别出来(Speech recognition, 0-9 digital audio files, choose one, the program will be identified)

利用凸优化方法求解估计信道的预编码，具体需要参考stphen boy 的凸优化工具包(solve the precoder by convex method)