A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT

Kun Lu; Yanchao Cong; Jinhui Fang; Xiangyuan Bu; Jianping An

doi:10.1109/ITNEC48623.2020.9085014

A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT

Kun Lu
, Yanchao Cong
, Jinhui Fang
, Xiangyuan Bu
, Jianping An

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

6 Citations (Scopus)

Abstract

Direct sequence spread spectrum (DSSS) minimum frequency shift keying (MSK) modulation is very suitable for satellite communications with short frame, but how to quickly achieve DSSS-MSK signal acquisition under high dynamic large Doppler shift and low signal-to-noise ratio(SNR) situation has always been a problem. This paper proposes a fast DSSS-MSK signal acquisition algorithm based on fast Fourier transform (FFT). The algorithm uses the MSK baseband waveform of the pseudo-code sequence as the matching template. The correlation operation is performed in the frequency domain through FFT. The correlation peak is generated by cyclic shift search in the frequency domain. Finally, the position of the correlation peak in the two-dimensional plane is used to estimate frequency offset and code offset information. The simulation results show that the acquisition performance of the proposed algorithm is 10dB better than the traditional algorithm in terms of SNR, and it is 2-3dB better than the method of transforming DSSS-MSK signal to DSSS-BPSK signal. Moreover, the acquisition algorithm proposed in this paper can quickly search large Doppler frequency shifts by cyclic shift in the frequency domain. Finally, the proposed acquisition algorithm was implemented based on Xilinx's Artix-7 series FPGA and AD9361 hardware platform.

Original language	English
Title of host publication	Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020
Editors	Bing Xu, Kefen Mou
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1118-1123
Number of pages	6
ISBN (Electronic)	9781728143903
DOIs	https://doi.org/10.1109/ITNEC48623.2020.9085014
Publication status	Published - Jun 2020
Event	4th IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020 - Chongqing, China Duration: 12 Jun 2020 → 14 Jun 2020

Publication series

Name	Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020

Conference

Conference	4th IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020
Country/Territory	China
City	Chongqing
Period	12/06/20 → 14/06/20

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

DSSS-MSK
FFT
acquisition
satellite communication

Access to Document

10.1109/ITNEC48623.2020.9085014

Cite this

Lu, K., Cong, Y., Fang, J., Bu, X., & An, J. (2020). A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT. In B. Xu, & K. Mou (Eds.), Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020 (pp. 1118-1123). Article 9085014 (Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ITNEC48623.2020.9085014

Lu, Kun ; Cong, Yanchao ; Fang, Jinhui et al. / A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT. Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020. editor / Bing Xu ; Kefen Mou. Institute of Electrical and Electronics Engineers Inc., 2020. pp. 1118-1123 (Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020).

@inproceedings{3c92c6313e99407e95b66a59eff0dada,

title = "A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT",

abstract = "Direct sequence spread spectrum (DSSS) minimum frequency shift keying (MSK) modulation is very suitable for satellite communications with short frame, but how to quickly achieve DSSS-MSK signal acquisition under high dynamic large Doppler shift and low signal-to-noise ratio(SNR) situation has always been a problem. This paper proposes a fast DSSS-MSK signal acquisition algorithm based on fast Fourier transform (FFT). The algorithm uses the MSK baseband waveform of the pseudo-code sequence as the matching template. The correlation operation is performed in the frequency domain through FFT. The correlation peak is generated by cyclic shift search in the frequency domain. Finally, the position of the correlation peak in the two-dimensional plane is used to estimate frequency offset and code offset information. The simulation results show that the acquisition performance of the proposed algorithm is 10dB better than the traditional algorithm in terms of SNR, and it is 2-3dB better than the method of transforming DSSS-MSK signal to DSSS-BPSK signal. Moreover, the acquisition algorithm proposed in this paper can quickly search large Doppler frequency shifts by cyclic shift in the frequency domain. Finally, the proposed acquisition algorithm was implemented based on Xilinx's Artix-7 series FPGA and AD9361 hardware platform.",

keywords = "DSSS-MSK, FFT, acquisition, satellite communication",

author = "Kun Lu and Yanchao Cong and Jinhui Fang and Xiangyuan Bu and Jianping An",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 4th IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020 ; Conference date: 12-06-2020 Through 14-06-2020",

year = "2020",

month = jun,

doi = "10.1109/ITNEC48623.2020.9085014",

language = "English",

series = "Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "1118--1123",

editor = "Bing Xu and Kefen Mou",

booktitle = "Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020",

address = "United States",

}

Lu, K, Cong, Y, Fang, J, Bu, X & An, J 2020, A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT. in B Xu & K Mou (eds), Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020., 9085014, Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020, Institute of Electrical and Electronics Engineers Inc., pp. 1118-1123, 4th IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020, Chongqing, China, 12/06/20. https://doi.org/10.1109/ITNEC48623.2020.9085014

A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT. / Lu, Kun; Cong, Yanchao; Fang, Jinhui et al.
Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020. ed. / Bing Xu; Kefen Mou. Institute of Electrical and Electronics Engineers Inc., 2020. p. 1118-1123 9085014 (Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT

AU - Lu, Kun

AU - Cong, Yanchao

AU - Fang, Jinhui

AU - Bu, Xiangyuan

AU - An, Jianping

PY - 2020/6

Y1 - 2020/6

N2 - Direct sequence spread spectrum (DSSS) minimum frequency shift keying (MSK) modulation is very suitable for satellite communications with short frame, but how to quickly achieve DSSS-MSK signal acquisition under high dynamic large Doppler shift and low signal-to-noise ratio(SNR) situation has always been a problem. This paper proposes a fast DSSS-MSK signal acquisition algorithm based on fast Fourier transform (FFT). The algorithm uses the MSK baseband waveform of the pseudo-code sequence as the matching template. The correlation operation is performed in the frequency domain through FFT. The correlation peak is generated by cyclic shift search in the frequency domain. Finally, the position of the correlation peak in the two-dimensional plane is used to estimate frequency offset and code offset information. The simulation results show that the acquisition performance of the proposed algorithm is 10dB better than the traditional algorithm in terms of SNR, and it is 2-3dB better than the method of transforming DSSS-MSK signal to DSSS-BPSK signal. Moreover, the acquisition algorithm proposed in this paper can quickly search large Doppler frequency shifts by cyclic shift in the frequency domain. Finally, the proposed acquisition algorithm was implemented based on Xilinx's Artix-7 series FPGA and AD9361 hardware platform.

AB - Direct sequence spread spectrum (DSSS) minimum frequency shift keying (MSK) modulation is very suitable for satellite communications with short frame, but how to quickly achieve DSSS-MSK signal acquisition under high dynamic large Doppler shift and low signal-to-noise ratio(SNR) situation has always been a problem. This paper proposes a fast DSSS-MSK signal acquisition algorithm based on fast Fourier transform (FFT). The algorithm uses the MSK baseband waveform of the pseudo-code sequence as the matching template. The correlation operation is performed in the frequency domain through FFT. The correlation peak is generated by cyclic shift search in the frequency domain. Finally, the position of the correlation peak in the two-dimensional plane is used to estimate frequency offset and code offset information. The simulation results show that the acquisition performance of the proposed algorithm is 10dB better than the traditional algorithm in terms of SNR, and it is 2-3dB better than the method of transforming DSSS-MSK signal to DSSS-BPSK signal. Moreover, the acquisition algorithm proposed in this paper can quickly search large Doppler frequency shifts by cyclic shift in the frequency domain. Finally, the proposed acquisition algorithm was implemented based on Xilinx's Artix-7 series FPGA and AD9361 hardware platform.

KW - DSSS-MSK

KW - FFT

KW - acquisition

KW - satellite communication

UR - https://www.scopus.com/pages/publications/85086226086

U2 - 10.1109/ITNEC48623.2020.9085014

DO - 10.1109/ITNEC48623.2020.9085014

M3 - Conference contribution

AN - SCOPUS:85086226086

T3 - Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020

SP - 1118

EP - 1123

BT - Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020

A2 - Xu, Bing

A2 - Mou, Kefen

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 4th IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020

Y2 - 12 June 2020 through 14 June 2020

ER -

Lu K, Cong Y, Fang J, Bu X, An J. A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT. In Xu B, Mou K, editors, Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020. Institute of Electrical and Electronics Engineers Inc. 2020. p. 1118-1123. 9085014. (Proceedings of 2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2020). doi: 10.1109/ITNEC48623.2020.9085014

A Joint Code-Doppler Acquisition Algorithm for DSSS-MSK Based on FFT

Abstract

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UN SDGs

Keywords

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