中国物理B ›› 2015, Vol. 24 ›› Issue (11): 118402-118402.doi: 10.1088/1674-1056/24/11/118402

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Improved dichotomous search frequency offset estimator for burst-mode continuous phase modulation

翟文超, 李赞, 司江勃, 柏均   

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, China
  • 收稿日期:2015-04-25 修回日期:2015-06-11 出版日期:2015-11-05 发布日期:2015-11-05
  • 通讯作者: Li Zan E-mail:zanli@xidian.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61301179), the Doctorial Programs Foundation of the Ministry of Education, China (Grant No. 20110203110011), and the Programme of Introducing Talents of Discipline to Universities, China (Grant No. B08038).

Improved dichotomous search frequency offset estimator for burst-mode continuous phase modulation

Zhai Wen-Chao (翟文超), Li Zan (李赞), Si Jiang-Bo (司江勃), Bai Jun (柏均)   

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, China
  • Received:2015-04-25 Revised:2015-06-11 Online:2015-11-05 Published:2015-11-05
  • Contact: Li Zan E-mail:zanli@xidian.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61301179), the Doctorial Programs Foundation of the Ministry of Education, China (Grant No. 20110203110011), and the Programme of Introducing Talents of Discipline to Universities, China (Grant No. B08038).

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摘要： A data-aided technique for carrier frequency offset estimation with continuous phase modulation (CPM) in burst-mode transmission is presented. The proposed technique first exploits a special pilot sequence, or training sequence, to form a sinusoidal waveform. Then, an improved dichotomous search frequency offset estimator is introduced to determine the frequency offset using the sinusoid. Theoretical analysis and simulation results indicate that our estimator is noteworthy in the following aspects. First, the estimator can operate independently of timing recovery. Second, it has relatively low outlier, i.e., the minimum signal-to-noise ratio (SNR) required to guarantee estimation accuracy. Finally, the most important property is that our estimator is complexity-reduced compared to the existing dichotomous search methods: it eliminates the need for fast Fourier transform (FFT) and modulation removal, and exhibits faster convergence rate without accuracy degradation.

关键词: frequency offset estimation, Cramer-Rao bound, dichotomous search, continuous phase modulation

Abstract: A data-aided technique for carrier frequency offset estimation with continuous phase modulation (CPM) in burst-mode transmission is presented. The proposed technique first exploits a special pilot sequence, or training sequence, to form a sinusoidal waveform. Then, an improved dichotomous search frequency offset estimator is introduced to determine the frequency offset using the sinusoid. Theoretical analysis and simulation results indicate that our estimator is noteworthy in the following aspects. First, the estimator can operate independently of timing recovery. Second, it has relatively low outlier, i.e., the minimum signal-to-noise ratio (SNR) required to guarantee estimation accuracy. Finally, the most important property is that our estimator is complexity-reduced compared to the existing dichotomous search methods: it eliminates the need for fast Fourier transform (FFT) and modulation removal, and exhibits faster convergence rate without accuracy degradation.

Key words: frequency offset estimation, Cramer-Rao bound, dichotomous search, continuous phase modulation

中图分类号:  (Radiowave and microwave (including millimeter wave) technology)

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