GMSK信号进行了仿真研究,GPRS采用与GSM 相同的频段、频带宽度、突发结构、无线调制标准、跳频规则以及相同的TDMA帧结构。因此，在GSM系统的基础上构建GPRS系统时，GSM系统中的绝大部分部件都不需要作硬件改动，只需作软件升级-GMSK signal simulation, GPRS and GSM using the same frequency and bandwidth, unexpected structure, the wireless standard modulation, frequency hopping and the same rules TDMA frame structure. Therefore, in the GSM system constructed on the basis of GPRS system, GSM System of most components do not need to make hardware changes, only for software upgrades