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Pilot Contamination Reduction
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
- 2023-07-07 06:45:03下载
- 积分：1
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2004全国大学生数学建模大赛,获奖论文
2004全国大学生数学建模大赛,获奖论文-2004 National Undergraduate Mathematical Modeling Contest, winning papers
- 2023-06-24 22:30:05下载
- 积分：1
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AOE网算法，VC实现
AOE网算法，VC实现-AOE network algorithm, VC
- 2022-03-05 23:14:20下载
- 积分：1
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很简单的程序，可以远程通过MDL laserace300火激光测距仪…
Very simple program that can fire laser rangefinder MDL laserACE300 remotly via rs232 and register output to file - work only with this type and ither my programs can fire many MDL s-Very simple program that can fire laser rangefinder MDL laserACE300 remotly via rs232 and register output to file- work only with this type and ither my programs can fire many MDL s
- 2023-08-06 17:55:03下载
- 积分：1
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求概率密度函数
对未知的分布绘制分布曲线，将数据文件按照高度和分布准备，预先判断分布区间，然后对区间进行细分，得到每一区间的概率，最后获得所有区间的概率分布情况，绘制概率分布曲线。
- 2022-09-29 16:45:05下载
- 积分：1
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快速傅里叶变换的c程序，共分五个部分，此为一维快速傅里叶变换快速算法DFT...
快速傅里叶变换的c程序，共分五个部分，此为一维快速傅里叶变换快速算法DFT-Fast Fourier Transform of the c program is divided into five sections, this is a one-dimensional fast Fourier transform fast algorithm for DFT
- 2022-10-13 13:20:03下载
- 积分：1
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基于最大类间方差阈值与遗传算法的道路分割算法
The code is based on Otsu threshold algorithm and heritage road split code to calculate the optimal threshold, enabling the road segmentation, experimental results are good.The code is based on Otsu threshold algorithm and heritage road split code to calculate the optimal threshold, enabling the road segmentation, experimental results are good.
- 2022-02-04 01:42:13下载
- 积分：1
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遗传算法分析TSP
资源描述
遗传算法(GA)是一种解优化问题的随机搜索方法，它借助于生物进化中的自然选择和遗传(即适者生存)的规律.
算法步骤(基本遗传算法)
Step 1.随机初始化pop_size个染色体.Step 2.用交叉算法更新染色体.Step 3.用变异算法更新染色体.Step
4.计算所有染色体的目标值.Step 5.根据目标值计算每个染色体的适应度.Step 6.通过轮盘赌的方法选择染色体.Step
7.重复第二至第六步直到终止条件满足.Step 8.输出最好的染色体作为最优解.
为利于遗传算法的计算，首先要对解进行编码，编码后的解称为染色体.对于约束优化问题，遗传算法是在染色体中进行操作，而把操作结果解码后去检验其可行性.
遗传算法的主要特征：
群体和种群的维数相等，为一个偶数维，且不随代数的变化而变化；适应函数直接选用目标函数；种群中的个体通过轮盘赌的方法选取；种群中的一对个体采用随机交配位的方式产生一对子代；每一个基因有相同的变异概率。
- 2022-02-01 22:31:24下载
- 积分：1
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名片管理
这种算法是名片的管理。所以你可以得到方便和简单应用程序。 祝你好运。
- 2022-02-01 10:30:12下载
- 积分：1
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文件MD5 生产算法
char *MD5_file (char *path, int md5_len)
{
FILE *fp = fopen (path, "rb");
MD5_CTX mdContext;
int bytes;
unsigned char data[1024];
char *file_md5;
int i;
if (fp == NULL) {
fprintf (stderr, "fopen %s failed
", path);
return NULL;
}
MD5Init (&mdContext);
while ((bytes = fread (data, 1, 1024, fp)) != 0)
{
MD5Update (&mdContext, data, bytes);
}
MD5Final (&mdContext);
file_md5 = (char
- 2022-07-11 22:12:17下载
- 积分：1
