Blind DSSS Signal Chip Rate Estimation Based on Band Pass Filtering 


Vol. 45,  No. 3, pp. 568-576, Mar.  2020
10.7840/kics.2020.45.3.568


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  Abstract

In general, a technique for estimating a data rate(symbol rate) of a signal using a cyclostationary characteristic is known in the case of an unknown non DSSS(Direct Sequence Spread Spectrum) digital modulated signal. When this method is applied to the estimation of the chip rate of the DSSS signal, the periodic properties of the chip sequence itself causes the performance to be very degraded because a large number of peaks including the rate of the peak appear in the cyclic moment spectrum. In this paper, we propose a technique for blind estimating the chip rate by bandpass filtering based on precise bandwidth estimation. The proposed blind chip rate estimation technique estimates the exact chip rate position by suppressing a number of maximum values except for the chip rate point in the cyclic moment spectrum by performing bandpass filtering based on the bandwidth estimation algorithm independent of the received signal bandwidth. For accurate bandwidth estimation, we apply the techniques commonly used for changepoint estimation. Further, the simulation results demonstrate the proposed method provides robust bandwidth estimation and chip rate estimation accuracy at low SNR.

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  Cite this article

[IEEE Style]

J. Kim, H. Yoon, H. Kang, B. Moon, C. Park, "Blind DSSS Signal Chip Rate Estimation Based on Band Pass Filtering," The Journal of Korean Institute of Communications and Information Sciences, vol. 45, no. 3, pp. 568-576, 2020. DOI: 10.7840/kics.2020.45.3.568.

[ACM Style]

Jae-Yun Kim, Hyun-Chul Yoon, Hyun-Jin Kang, Byung-Ho Moon, and Chul-Sun Park. 2020. Blind DSSS Signal Chip Rate Estimation Based on Band Pass Filtering. The Journal of Korean Institute of Communications and Information Sciences, 45, 3, (2020), 568-576. DOI: 10.7840/kics.2020.45.3.568.

[KICS Style]

Jae-Yun Kim, Hyun-Chul Yoon, Hyun-Jin Kang, Byung-Ho Moon, Chul-Sun Park, "Blind DSSS Signal Chip Rate Estimation Based on Band Pass Filtering," The Journal of Korean Institute of Communications and Information Sciences, vol. 45, no. 3, pp. 568-576, 3. 2020. (https://doi.org/10.7840/kics.2020.45.3.568)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880