Performance Evaluation of Underwater Code Division Multiple Access Scheme on Forward-Link through Water-Tank and Lake Experiment 


Vol. 39,  No. 2, pp. 199-208, Feb.  2014


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  Abstract

Code division multiple access (CDMA) is one of the promising medium access control (MAC) schemes for underwater acoustic sensor networks because of its robustness against frequency-selective fading and high frequency-reuse efficiency. As a way of performance evaluation, sea or lake experiment has been employed along with computer simulation.. In this study, we design the underwater CDMA forward-link transceiver and evaluate the feasibility aginst harsh underwater acoustic channel in water-tank first. Then, based on the water-tank experiment results, we improved the transceiver and showed the improvements in a lake experiment. A pseudo random noise code acquisition process is added for phase error correction before decoding the user data by means of a Walsh code in the receiver. Interleaving and convolutional channel coding scheme are also used for performance improvement. Experimental results show that the multiplexed data is recovered by means of demultiplexing at receivers with error-free in case of two users while with less than 15% bit error rate in case of three and four users.

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  Cite this article

[IEEE Style]

B. Seo, K. Son, H. Cho, "Performance Evaluation of Underwater Code Division Multiple Access Scheme on Forward-Link through Water-Tank and Lake Experiment," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 2, pp. 199-208, 2014. DOI: .

[ACM Style]

Bo-Min Seo, Kweon Son, and Ho-Shin Cho. 2014. Performance Evaluation of Underwater Code Division Multiple Access Scheme on Forward-Link through Water-Tank and Lake Experiment. The Journal of Korean Institute of Communications and Information Sciences, 39, 2, (2014), 199-208. DOI: .

[KICS Style]

Bo-Min Seo, Kweon Son, Ho-Shin Cho, "Performance Evaluation of Underwater Code Division Multiple Access Scheme on Forward-Link through Water-Tank and Lake Experiment," The Journal of Korean Institute of Communications and Information Sciences, vol. 39, no. 2, pp. 199-208, 2. 2014.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880