A Timing Recovery Scheme for Variable Symbol Rate Digital M-ary QASK Receiver 


Vol. 38,  No. 7, pp. 545-551, Jul.  2013


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  Abstract

Timing recovery loop composed of the Timing Error Detector(TED), loop filter and resampler is widely used for the timing synchronization in MQASK receivers. Since TED is sensitive to the delay between the symbol period of the signal and sampling period, the output is averaged out when the symbol rate and sampling rate are quite different the recovery loop cannot work at all. This paper presents a sampling frequency discriminator (SRD), which detects the frequency offset of the sampling clock to the symbol clock of the MQASK data transmitted. Employing the SRD, the closed loop timing recovery scheme performs the frequency-aided timing acquisition and achieve the synchronization at extremely high sampling frequency offset, which can be used in variable symbol rate MQASK receivers.

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  Cite this article

[IEEE Style]

D. Baek, W. Lim, C. Kim, "A Timing Recovery Scheme for Variable Symbol Rate Digital M-ary QASK Receiver," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 7, pp. 545-551, 2013. DOI: .

[ACM Style]

Daesung Baek, Wongyu Lim, and Chong-hoon Kim. 2013. A Timing Recovery Scheme for Variable Symbol Rate Digital M-ary QASK Receiver. The Journal of Korean Institute of Communications and Information Sciences, 38, 7, (2013), 545-551. DOI: .

[KICS Style]

Daesung Baek, Wongyu Lim, Chong-hoon Kim, "A Timing Recovery Scheme for Variable Symbol Rate Digital M-ary QASK Receiver," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 7, pp. 545-551, 7. 2013.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880