advanced-signals

MAKELATT Create lattice L = MAKELATT(KIND,PTS,DIM) makes desired kind of dim-dimensional finite lattice that consists of pts elements. Available designs are listed in the table below. All the generated lattices are geometrically uniform. The lattice points are chosen from the origin to higher shells. Sometimes its usefull to generate lattices from the number of one dimensional pattern side i.e. PTS = DIM ^ SIDE. Table of available designs Design | Dimension | KIND -----------+-----------+---------- Zn | n>=1 | Z An | n>=1 | A Dn | n>=3 | D Hexagonal | n=2 | Hex fcc | n=3 | fcc

Linear prediction follows naturally from the general mathematics of linear systems. As the system output is defined as a linear combination of past samples, the system’s future output can be predicted if the scaling coefficients bj and ak are known.

Contrast is the difference in luminance or color that makes an object (or its representation in an image or display) distinguishable. In visual perception of the real world, contrast is determined by the difference in the color and brightness of the object and other objects within the same field of view. Because the human visual system is more sensitive to contrast than absolute luminance, we can perceive the world similarly regardless of the huge changes in illumination over the day or place to place. The maximum contrast of an image is the contrast ratio or dynamic range

说明：  matlab R2012a 超级学习手册随书源代码(Matlab R2012a Super Learning Manual with Book Source Code)

说明：  采用MATLAB实现rs编码和卷积编码的功能，(Rs achieving the functions of coding and convolutional coding)

papr to differenrt number of subcarrier: we put N = 256,512,1024 and show the output ofp ccdf with papr when we use QPSK modulation. The PAPR ratio is a measure of the dynamic range in OFDM signals. Thus high PAPR induces a high dynamic range which describes high variability in the signal range. complex data sequences are input to the IDFT of an OFDM transmitter then at the output of the IDFT, real and imaginary parts are obtained.

这是一种改进的粒子群优化算法，通过简单的测试函数验证(This is an improved particle swarm optimization, through a simple test function verification)

此程序为将a律13折线的PCM信号，进行采样量化输出，和其中的量化精度可达0.01(This procedure will be a law broken line 13 of the PCM signal sample quantization output, and the quantitative accuracy of 0.01)

超宽带程序示范程序\M-DPSK8dpsk.rar(Ultra-wideband Program Files demonstration program M-DPSK 8dpsk.rar)

对信号计算11/2维切片谱，可用来分析二次相位耦合检测。(Calculation of signal 11/2 dimension slice spectrum can be used to analyze the quadratic phase coupling detection.)