matlab-arithmetic

说明：  规范编程，规格编程习惯，，，，，，，，，，(guifanbiancheng)

利用GPIB接口控制K2306上下电，电压5V。(The control of K2306 electric interface using GPIB, voltage 5V. )

包括RSSI与距离模型转换，以及三边定位，高斯滤波(Including RSSI and distance model conversion, as well as trilateral positioning, Gaussian)

运用星座图重排策略的HARQ方案，与chhase combined 方案的比较仿真 (Using constellation rearrangement strategy HARQ scheme, comparing simulation program chhase combined)

说明：  一个数如果恰好等于它的因子之和，这个数就称为“完数”。例如6=1＋2＋3.编程 　　　 找出1000以内的所有完数。 (If a number is just equal to the sum of its factors, this number is called &quot End of a few.&quot For example 6 = 1+2+3. Programmatically find all finished within a number of 1000.)

MATLAB常用算法程序集，功能比较齐全。(MATLAB commonly used algorithm for assembly, function relatively complete.)

this is the matlab algorithm for mvdr beam forming

采用Hamming窗实现的低通滤波器，可设置通带频率、截止频率以及带宽等滤波器特性参数。(The low-pass filter is realized by using Hamming window, can set the passband filter characteristic parameters such as frequency, the cut-off frequency and bandwidth.)

读取matlab的mat文件(read the document mat)

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 ) )