readdatasanjiaowang

Quadrature amplitude modulation (QAM) is a modulation scheme in which two sinusoidal carriers, one exactly 90 degrees out of phase with respect to the other, are used to transmit data over a given physical channel. One signal is called the I signal, and the other is called the Q signal. Because the orthogonal carriers occupy the same frequency band and differ by a 90 degree phase shift, each can be modulated independently, transmitted over the same frequency band, and separated by demodulation at the receiver. For a given available bandwidth, QAM enables data transmission at twice the rate of standard pulse amplitude modulation (PAM) without any degradation in the bit error ratio (BER).

基带传输： 欲传送的01比特流 + 码型变换（HDB3码） + 基带成型网络（采用升余弦滚降系统）+ 信道 + 码型反变换 + 01比特流。 (Baseband transmission: To send the 01 bit stream+ code type transformation (HDB3 code)+ base-band forming network (with raised cosine roll-off system)++ code based channel inverse transform+ 01 bit stream.)

利用rbf网络实现函数逼近的功能没使用神经网络工具箱(rbf function approximation implementation)

paper on 802.15.4 simulation

its a fountain coding kit

高斯-赛德尔迭代法求解方程组，通过matlab编程实现。(Gauss-seidel iterative method for solving equations, by matlab programming. )

用于对USPS数据进行分类的各种分类器，用于对多维采样点进行无监督分类。可根据类别数修改分类器，模式识别作业的部分代码。 (USPS data for the various classification categories, for sampling points on the multi-dimensional non-supervised classification. Can be modified in accordance with several types of classifiers, pattern recognition part of the operating code.)

说明：  关于谱估计的一些基本的程序.有自回归.esprit,music(Spectral estimation on some basic procedures, since the reunification, esprit, music)

simple laboratory problem volved by matlab 2

用M语言编写的画多元数据标准化后再画平行坐标图代码，数据用的是一组蔬菜油（国际期刊）数据，写得不好，多指教。(Sputum M reclaimed land 的画多 knife 编 La prayer Kam 据标 sulfur 化后 pain 画平 contract 标 lin-hao 代码, Kam Kok 据 sputum 的 菜 FOR?组remonstrance (国际期刊) Kam 据, reclaimed land 得不好, 多 Ning 教.)