kt878

系统介绍通信网，包括通信网信源模型，erlang拒绝和等待系统，通信网性能分析(system introduced communications network, including communications network source model, and refused to wait for the erlang system performance analysis of communication networks, etc.)

有N件物品和一个容量为V的背包。第i件物品的费用是c，价值是w。求解将哪些物品装入背包可使这些物品的费用总和不超过背包容量，且价值总和最大。(There are N items and a knapsack capacity of V' s. No. i is the cost of items c, the value of w. Solving items into the backpack which will enable the cost of these items does not exceed the sum of the capacity of backpack, and the sum of the maximum value.)

古高科技公司的运动控制卡GE_400系列Demo例程(Ancient tech companies Motion Control Card GE_400 Series Demo routines)

可模拟能量检测 在任职无线网络中的频谱感知中有重要应用(Can simulate the energy detection in wireless networks in office, there are important applications of the spectrum sensing)

解析PSD，通过搜集找到的c# 解析psd的源码 (analysis psd)

例4：在sinc(t)信号中叠加噪声，分析对应频谱 fs=100 采样频率,必须大于两倍基带信号最高频率 ts=1/fs 采样时间间隔 T=2 时间窗大小 ( x=x+0.1*randn(1,N) x=awgn(x,-10, measured ) figure plot(t,x) title( 时域信号图 ) xlabel( t /s ) y=fft(x,N) figure if mod(N,2)~=0 N=N-1 end f=linspace(0,fs/2,N/2) plot(f,abs(y(1:N/2))*2/N) title( 叠加噪声的sinc(t)信号频谱 ) xlabel( f /Hz ) figure y0=y(1:N/2) P=y0.*conj(y0)/N P=10*log10(P) plot(f,P) title( 功率谱 ) xlabel( f /Hz ) )

说明：  CMMB系统符号同步算法设计，基于同步训练序列的同步算法(CMMB system symbol synchronization algorithm design, based on the synchronization training sequence synchronization algorithm)

说明：  电力负荷的混沌预测方法 电力负荷的方法很多~~本文是基于混沌(Chaos power load forecasting method)

对二维图片进行中心放大，能控制放大的倍数，采用最近邻法(enlarge pictures from the center of it，can control the index for enlargement)

散点数据生成格网,2d,3d,vc6.0,matlab6.5(Source- scatter data generated grid)