大量数值计算的算法

应用背景This paper considers the problem of interference mitigation in multi-cell multi-antenna time division duplex (TDD) wireless systems for downlink transmission. An efficient way to obtain channel state information (CSI) at the base station is by using uplink pilots and reciprocity of the downlink channel. At the same time, it has been shown that pilots from different cells contaminate each other, resulting in corruption of precoding matrices used by base stations, and high inter-cell interference. This paper studies the effects of shifting the location of pilots in time frames used in neighboring cells, and its effectiveness in obtaining better channel estimates, and, thereby, inter-cell interference reduction.关键技术Wireless cellular network designs with multiple antennas have been adopted by several modern wireless systems, which aim for high throughput as well as high

本书重点介绍了MATLAB环境下Maple强大的计算能力，以解决科学计算中的数值问题

为实现使用哈希技术的直接访问文件的程序。碰撞处理采用线性探测和链接没有更换。[散列函数 = (record_id mod 10)]

时频分析使用的源代码，希望对大家有用，接着上传！-The use of time-frequency analysis of the source code, in the hope that useful to everybody, and then upload!

       Dual Tone Multi Frequencies (DTMF tones) are two different tones at two ends of a spectrum that are used to send information in telephonic communication mediums. The tones represent numbers 0-9 and the symbols * and #. A series of these numbers may be assigned to individuals as points of contact, as in a phone number, or the numbers can be used to relay other sorts of information.       While it may seem confusing, it should be noted that all numbers on a telephone are assigned two DTMF tones, and in all, seven different frequencies are assigned. Some numbers will have the same lower frequency, but different higher frequency, while others will have the same higher frequency but a different lower frequency. The range is between 697 Hz and 941 Hz for the lower frequencies and 1209 Hz and 1633 Hz for

用C写的可以实现求解满秩线性方程组以及最小二乘曲线拟合的函数-written in C can be achieved full rank solving linear equations and least-squares curve fitting the function

本算法是关于高级加密标准AES的源代码描述，亲测可用，里面有测试代码，可以在命令行看到测试的加解密效果，需要的亲可以下载来试试哦！

Solutions for automated lighting in buildings

应用背景//////////////////////////////////// /完整的DFA/ / 2004-04-20////////////////////////////////// * *这个类实现了确定性的完整的有限自动机。的关键技术/ * *这个类实现了整数集的分区& lt；代码& gt；0，……，大小& lt；/代码& gt；。数组；

VB界面精确计算PMV值，方面快捷，适用于工程计算及科学相关研究，精确度高达99%