A Study on Fast Frequency Hopping Communication for Anti-Jamming in TDL System 


Vol. 43,  No. 1, pp. 175-180, Jan.  2018
10.7840/kics.2018.43.1.175


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  Abstract

Tactical datalink has to support fast frequency hopping for anti-jamming requirement due to the importance and security of tactical message. The fast frequency hopping based communication has a very short reception time at a specific frequency compared to the existing non-frequency hopping communication, so that the synchronization acquisition through the RF AGC of the receiving terminal is very limited. In this paper, we propose a synchronization technique with fixed RF gain that does not apply RF AGC. When RF AGC is not used, signal distortion due to RF amplifier saturation occurs. A simulation test was performed using the RF receiver of the prototype terminal, and it was found that even if there is signal distortion due to saturation of the RF element, demodulation is possible in the case of a QPSK waveform. In addition, considering the FEC input range limitation after the ADC, we have devised a digital normalization technique that normalizes the received signal power to a certain constant. It is confirmed that the synchronization acquisition and signal demodulation between terminals appling the proposed design techniques are successfully performed in a wide range of received signal power including RF saturation region.

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  Cite this article

[IEEE Style]

J. Kim, Y. Cho, K. Shin, M. Bae, J. Kim, J. Lee, J. Kim, "A Study on Fast Frequency Hopping Communication for Anti-Jamming in TDL System," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 1, pp. 175-180, 2018. DOI: 10.7840/kics.2018.43.1.175.

[ACM Style]

Jaewon Kim, Youngil Cho, Kyungchan Shin, Moonkwan Bae, Jooyeon Kim, Jeonghoon Lee, and Jongsung Kim. 2018. A Study on Fast Frequency Hopping Communication for Anti-Jamming in TDL System. The Journal of Korean Institute of Communications and Information Sciences, 43, 1, (2018), 175-180. DOI: 10.7840/kics.2018.43.1.175.

[KICS Style]

Jaewon Kim, Youngil Cho, Kyungchan Shin, Moonkwan Bae, Jooyeon Kim, Jeonghoon Lee, Jongsung Kim, "A Study on Fast Frequency Hopping Communication for Anti-Jamming in TDL System," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 1, pp. 175-180, 1. 2018. (https://doi.org/10.7840/kics.2018.43.1.175)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880