Performance Analysis of Underwater OFDM Systems with Different Pilot Spacings in Western Sea of Korea 


Vol. 42,  No. 12, pp. 2248-2254, Dec.  2017
10.7840/kics.2017.42.12.2248


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  Abstract

Recently, underwater acoustic OFDM communications have been actively studied for high-speed data transmission. In the OFDM systems, pilot symbols are allocated to dedicated subcarriers, with which channel estimation and equalization are performed. Accurate channel estimation is required to ensure stable communication performance, and its performance largely depends on the pilot symbol allocation scheme. Since underwater communications, unlike the communications using radio frequency in terrestrial, uses acoustic sound to transmit data through sea water, the underwater channel exhibits severe selectivity both in time and frequency domains. In this paper, we analyze the performance of underwater OFDM systems with various pilot allocation methods, each having different spacing between pilot symbols in time and frequency domain based on the experiments conducted at the western sea of Korea. Performance analysis suggests suitable pilot spacings in time and frequency domains satisfying low bit error rate and high data rate, simultaneously.

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  Cite this article

[IEEE Style]

Y. Cho, J. Kim, H. Ko, "Performance Analysis of Underwater OFDM Systems with Different Pilot Spacings in Western Sea of Korea," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 12, pp. 2248-2254, 2017. DOI: 10.7840/kics.2017.42.12.2248.

[ACM Style]

Yong-Ho Cho, Jun-Ho Kim, and Hak-Lim Ko. 2017. Performance Analysis of Underwater OFDM Systems with Different Pilot Spacings in Western Sea of Korea. The Journal of Korean Institute of Communications and Information Sciences, 42, 12, (2017), 2248-2254. DOI: 10.7840/kics.2017.42.12.2248.

[KICS Style]

Yong-Ho Cho, Jun-Ho Kim, Hak-Lim Ko, "Performance Analysis of Underwater OFDM Systems with Different Pilot Spacings in Western Sea of Korea," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 12, pp. 2248-2254, 12. 2017. (https://doi.org/10.7840/kics.2017.42.12.2248)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880