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基于16APSK调制解调传输系统的仿真 16APSK调制技术有较高的数据传输速率，但是它的误码率也相对较高。(16APSK modem-based transmission system simulation 16APSK modulation technique for a higher data transfer rate, but its relatively high error rate.)

ONDULEUR DE TENSION TRIPHASE IN THE ONE BLOCK

完成3gpp标准中LTE系统16QAM调制方式的编码，该附件为子函数，输入bit流即可(Completion of 16QAM modulation coding 3gpp standard LTE system, the attachment of Functions, input bit stream can be)

power system load controlled by hady

无线通信抗衰落，合并器输出信噪比的概率密度函数比较。选择性合并，最大比率合并，等增益合并的概率比较(Slow Fading Plot Outage Probabiloty vs SNR for maximum ratio combining, coherent combining and antenna selection.)

this code receive a string from input and calculation shanon code

一直一因果系统，画出其零极点图和冲击响应波形(Been a causal system, draw the pole-zero diagram and impulse response waveform)

Data Encryption by Matrix Multiplication We will only use numbers 0 to 26 for the encryptive mathematics operation. Numbers from 1 to 26 are for letters from A to Z and 0 is for all non-letter characters. To minimize usage of numbers, all letters are converted to upper case. The original message is converted to number array according to the ASCII table and minus 64. We partition whole array into blocks of 8 numbers. The last block may be added several zeros. Then multiply each block by the an 8x8 matrix A which is invertible in Z27 to get cipher data. The decryption is the same process except to use its inverse matrix B. For good visual reading, we convert all non-letter characters to under score for the decryption.

说明：  有关于系统呼损率丢包率随新呼叫接入门限的变化规律，用于判定新呼叫的介入指标(Call loss rate on the system packet loss rate with the new call admission threshold variation, used to determine the involvement of the new call indicator)

摄影测量中的前交后交方法计算出实地三维坐标(Photogrammetry and submit it before the delivery method to calculate three-dimensional coordinates of the field)