摘要
介绍第三代移动通信ＷＣＤＭＡ 系统的调制技术，包括ＱＰＳＫ 调制和解调的基本原理，以及ＷＣＤＭＡ 系统的调制方式。分析了在实际应用中多普勒频偏和频率稳定度对调制性能的影响，并简要介绍了调制、解调的实现方法。
The modulation technology of the third generation mobile WCDMA system including the QPSK is introduced in this paper, including the QPSK. We also analysize the impacts on the system capabilities caused by Doppler frequency shift and its own frequency stability.
出处
《电信快报》
1999年第11期6-9,共4页
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