An Improved Symbol Timing Error Detector for QPSK Signals

Desheng Shi; Chaoxing Yan; Nan Wu; Hua Wang; Jingming Kuang

1st International ICST Workshop on Satellite Communications

Research Article

An Improved Symbol Timing Error Detector for QPSK Signals

Cite: BibTeX Plain Text

@INPROCEEDINGS{10.1109/ChinaCom.2011.6158318,
    author={Desheng Shi and Chaoxing Yan and Nan Wu and Hua Wang and Jingming Kuang},
    title={An Improved Symbol Timing Error Detector for QPSK Signals},
    proceedings={1st International ICST Workshop on Satellite Communications},
    publisher={IEEE},
    proceedings_a={SATCOM},
    year={2012},
    month={3},
    keywords={timing error detector extended gardner (xga) detector symbol timing recovery self-noise reduction},
    doi={10.1109/ChinaCom.2011.6158318}
}

Desheng Shi
Chaoxing Yan
Nan Wu
Hua Wang
Jingming Kuang
Year: 2012
An Improved Symbol Timing Error Detector for QPSK Signals
SATCOM
IEEE
DOI: 10.1109/ChinaCom.2011.6158318

Desheng Shi, Chaoxing Yan¹, Nan Wu¹, Hua Wang¹^,*, Jingming Kuang¹

1: Beijing Institute of Technology

*Contact email: wanghua@bit.edu.cn

Abstract

In this paper, based on analyzing the characteristics of the traditional timing error detectors, a new detector is proposed for quadratic phase shift keying (QPSK) signals. It makes use of the implicit timing information where there is no transition between consecutive symbols. Compared with the conventional timing error detector, the proposed one can improve the open loop performance. With the improved slope of the proposed detector’s S-curve, its residual timing jitter is investigated by simulation. Results show that the proposed estimator can reduce the self noise jitter in some degree, especially at medium-to-high SNR range.

Keywords: timing error detector extended gardner (xga) detector symbol timing recovery self-noise reduction

Published: 2012-03-27
Publisher: IEEE

: http://dx.doi.org/10.1109/ChinaCom.2011.6158318