[1] Zhang Chaojie, Jin Xiaojun, Yu Faxin, Jin Zhonghe, et al. Performance analysis of a novel chip tracking loop usedfor regenerative pseudo-noise ranging clock recovery [J]. Journal of Southeast University (English Edition), 2007, 23 (2): 185-189. [doi:10.3969/j.issn.1003-7985.2007.02.007]

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Performance analysis of a novel chip tracking loop usedfor regenerative pseudo-noise ranging clock recovery()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

23

Issue:

2007 2

Page:

185-189

Research Field:

Information and Communication Engineering

Publishing date:

2007-06-30

Info

Title:

Performance analysis of a novel chip tracking loop usedfor regenerative pseudo-noise ranging clock recovery

Author(s):

Zhang Chaojie;  Jin Xiaojun;  Yu Faxin;  Jin Zhonghe

Department of Information Science and Electronics Engineering, Zhejiang University, Hangzhou 310027, China

Keywords:

clock recovery;  tracking loops;  pseudo-noise codes ranging;  data transition tracking loop;  chip tracking loop

PACS:

TN927

DOI:

10.3969/j.issn.1003-7985.2007.02.007

Abstract:

To improve the performance of composite pseudo-noise(PN)code clock recovery in a regenerative PN ranging system at a low symbol signal-to-noise ratio(SNR), a novel chip tracking loop(CTL)used for regenerative PN ranging clock recovery is adopted.The CTL is a modified data transition tracking loop(DTTL).The difference between them is that the Q channel output of the CTL is directly multiplied by a clock component, while that of the DTTL is multiplied by the I channel transition detector output.Under the condition of a quasi-squareware PN ranging code, the tracking(mean square timing jitter)performance of the CTL is analyzed.The tracking performances of the CTL and the DTTL are compared over a wide range of symbol SNRs.The result shows that the CTL and the DTTL have the same performance at a large symbol SNR, while at a low symbol SNR, the former offers a noticeable enhancement.

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Memo

Memo:

Biographies: Zhang Chaojie(1982—), male, graduate;Jin Zhonghe(corresponding author), male, doctor, professor, jinzh@zju.edu.cn.

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