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应用科学学报 ›› 2000, Vol. 18 ›› Issue (4): 313-316.

• 论文 • 上一篇    下一篇

基于相关技术的MPSK DS/CDMA载波跟踪

郑洁, 胡爱群   

  1. 东南大学无线电系, 江苏南京 210096
  • 收稿日期:1999-05-10 修回日期:1999-09-17 出版日期:2000-12-31 发布日期:2000-12-31
  • 作者简介:郑洁(1967-),女,湖北武汉人,讲师,学士.

Carrier Recovery Based on Correlation Technique

ZHENG Jie, HU Ai-qun   

  1. Department of Radio Engineering, Southeast University, Nanjing 210096, China
  • Received:1999-05-10 Revised:1999-09-17 Online:2000-12-31 Published:2000-12-31

PDF

114

被引次数

2

摘要： 提出了一个在MPSK DS/CDMA接收机中进行载波跟踪的新方案.该方案用两个对称的X相关器形成一个鉴频器.理论分析表明,该方案的跟踪范围是符号速率的两倍,并且与MPSK的键控相位数及扩频码的码长无关.

关键词: 载波恢复, 相关, 直扩/码分多址, 移相键控调制

Abstract: This paper presents a new method for carrier recovery in a direct sequence (DS) code division multi-access (CDMA) receiver. The data demodulation scheme used is multiple phase shift keying (MPSK). The proposed scheme employs two balanced X-correlators to form a frequency discriminator. Theoretical analysis indicates that the proposed method has a tracking range that doubles the symbol rate, and the tracking range is independent of the keying phase number of the MPSK modulation.

Key words: phase shift keying modulation, carrier recovery, correlation, DS/CDMA

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