this is a simple implementation to gzip algorithm

关于短信猫的java相关信息，具有特定的库文件等，方便感兴趣的人研究使用-Convenient to people who are interested to study the use of SMS cat java related information, with a specific library files

使用gsm modem或gprs modem发送短消息，gsm使用波特率9600,gprs使用波特率1152-Use gsm modem or gprs modem to send a short message, gsm use baud 9600, gprs use 115200 baud

This function is used to calculate the arbitrary function of the first order partial derivative (numerical methods), GSM is GMSK modulation signal generation, Build a framework OFDM communication system.