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本文详细叙述了用于移动通信和个人通信系统的各种数字调制技术。其中包括北美和日本第二代数字蜂窝区移动通信系统使用的移相π／ＱＰＳＫ，以及欧洲ＧＳＭ系统使用的高斯最小频移键控（ＧＭＳＫ）。本文还简要介绍了未来系统调制方式的研究动态。
This article describes in detail various digital modulation techniques for mobile and personal communication systems. This includes the phase-shifted π / QPSK used by second-generation digital cellular mobile communication systems in North America and Japan and the Gaussian Minimum Shift Keying (GMSK) used by the European GSM system. This article also briefly introduces the research trends of future system modulation methods.