MQAM_4096QAM

计算图像水平相邻、垂直相邻、对角相邻像素之间的相关性(relativity between pixel of image)

base is now HeapNumber with valid Smi value.

用MATLAB对DSB的调制解调进行仿真模拟，包括时域，频域，加噪，包络。(MATLAB for DSB modulation and demodulation simulation, including time domain, frequency domain, noise, envelope.)

基于DFT的OFDM信道估计，介绍了三种低复杂度的信道估计器，对于OFDM的信道估计研究很有参考价值(Analysis of DFT-Based Channel Estimators for OFDM)

直扩码分多址DS-CDMA是利用高速的WALSH正交码序列作为地址码，与多用户信息数据相乘得到信息数据的直接扩频信号，再经过BPSK调制后发送出去，经过AWGN无线信道的传输后，在接收端与本地产生的地址码进行相关检测，从中将地址码与本地码一致的用户数据选出，把不一致的用户数据删除。(DS-CDMA DS-CDMA is the use of high-speed WALSH orthogonal code sequences as address code, with multi-user information data has been multiplied by the direct spread spectrum data information signal, and then after a BPSK modulated sent through AWGN channel after transmission, at the receiving end with the locally generated address code associated Detect, which will address code with local codes consistent user data elected to delete user data inconsistencies.)

说明：  LDPC 64QAM仿真程序 matlab 有具体的编码和解码源程序，对信道编码的人很有帮助(LDPC 64QAM simulation program matlab has specific coding and decoding source program, which is very helpful to channel coding people)

说明：  使用Labview平台计算误码率，绘制误码率曲线，用于通信系统仿真。(Calculate the bit error rate and reconstruct the bit error rate curve)

说明：  卫星信道信道估计的matlab仿真程序，对不同的插值算法给出比较输出并画出误码率-信噪比曲线(Satellite channel channel estimation matlab simulation program, different interpolation algorithms and draw the comparison output is given BER- SNR curve)

TDOA algorithm presentation

标准接口1-5V转换成4-20mA程序，应用于标准传感器接入(Standard Interface 1-5V Converting 4-20mA Program for Standard Sensor Access)