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OFDM
OFDM系统的一个基本模型，包含各个模块。(OFDM system, a basic model that contains various modules.)
- 2009-11-11 17:08:07下载
- 积分：1
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rtejfgds
现有的代数特征的抽取方法绝大多数采用一维的方法，即首先将图像转换为一维向量，再用主分量分析（PCA）,Fisher线性鉴别分析（LDA）,Fisherfaces式核主分量分析（KPCA）等方法抽取特征，然后用适合的分类器分类。针对一维方法维数过高，计算量大，协方差矩阵常常是奇异矩阵等不足，提出了二维的图像特征抽取方法，计算量小，协方差矩阵一般是可逆的，且识别率较高。(existing algebra feature extraction method using a majority of the peacekeepers, First images will be converted into one-dimensional vector, and then principal component analysis (PCA), Fisher Linear Discriminant Analysis (LDA), Fisherfaces audits principal component analysis (KPCA), and other selected characteristics, then use the appropriate classification for classification. Victoria against an excessive dimension method, calculation, covariance matrix is often inadequate singular matrix, a two-dimensional image feature extraction method, a small amount of covariance matrix is usually reversible, and the recognition rate higher.)
- 2020-08-14 13:28:28下载
- 积分：1
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14-node
14节点电力系统潮流计算前推回代牛顿拉夫逊法(14 nodes Newton Raphson power flow calculation)
- 2020-07-02 23:20:01下载
- 积分：1
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music
频率估计的根MUSIC方法.y ->数据向量 n -> 模型阶数 m -> 矩阵阶数 w <- 频率谱估计(The Root MUSIC method for frequency estimation.)
- 2013-12-05 13:14:17下载
- 积分：1
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LFM_time_frequency
线性调频信号的时域，频域表示，包括坐标转换设置。对雷达初学者有指导意义！(Linear FM signals in time domain, frequency domain representation, including coordinate conversion settings. Radar beginners guide!)
- 2010-05-16 08:38:38下载
- 积分：1
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Array-yuan-changes-in-the-number
等间距线性阵列，阵元间距d= λ /2，等幅加权，目标方位φr = 0°，无噪声。
分别仿真计算阵元数M=8 、16时的阵列方向图，定性分析产生的原因。（可通过3dB波束宽度计算公式说明）
(Equally spaced linear array, the array element spacing d = λ/2, equal amplitude weighted target azimuth φr = 0, no noise. , Respectively, the number of array elements M = 8 and 16 when the array pattern, qualitative analysis to produce simulation. (Available by 3dB beamwidth formula noted))
- 2013-01-22 20:27:31下载
- 积分：1
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OFDM_occour
OFDM信号通过功率放大器以及功率放大器的预失真全套代码(OFDM PA)
- 2021-04-06 18:19:02下载
- 积分：1
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clipping
matlab限幅滤波法降低ofdm峰均比(matlab limiting filtering method to reduce PAPR ofdm)
- 2009-10-21 10:17:40下载
- 积分：1
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cg1
cognitive radio channel effects
simulations in matlab
- 2010-10-04 21:18:10下载
- 积分：1
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NHT1d
采用以下四种格式：中心差分、一阶迎风、混合格式和QUICK格式对一维稳态无源项的对流-扩散方程进行求解(The following four formats: central difference, the first order upwind, QUICK format mixed formats and one-dimensional steady-state passive entry of convection- diffusion equations were solved)
- 2010-11-11 15:13:40下载
- 积分：1
