用查表发和计算法实现的CRC24a校验码的生成。crc24a校验码主要用于LTE数据物理共享信道中-Look-up table calculation achieve CRC24a checksum generation. crc24a check code is mainly used for LTE data physical shared channel

用C实现crc计算的方法（查表法），给出了对于常见生成多项式的处理过程。-Implemented in C crc calculation method (look-up table) is given for the common generator polynomial of the process.

根据GSM协议，利用查表法的方法实现8PSK，教标准方法，运行效率更高，lt8psk是主函数-According to the GSM protocol, using look-up table method to achieve 8PSK, teach standard methods, greater operating efficiency, lt8psk is the main function