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Closed-Loop Power Control for Code Division Multiple Access in Time-Varying Underwater Acoustic Channel
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 Title & Authors
Closed-Loop Power Control for Code Division Multiple Access in Time-Varying Underwater Acoustic Channel
Seo, Bo-Min; Cho, Ho-Shin;
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 Abstract
Code division multiple access (CDMA) is one of the promising medium access control scheme for underwater acoustic sensor networks due to its beneficial features such as robustness against frequency-selective fading and high frequency-reuse efficiency. In this paper, we design a closed-loop power control scheme for the underwater CDMA, to adapt time-varying acoustic channel. In the proposed scheme, sink node sends to sensor nodes the associated path loss which is acquired by uplink-channel analysis based on received packets from the sensor nodes. Then, sensor nodes adjust their transmission power in an adaptive manner to time-varying underwater acoustic channel, according to the informations sent by the sink node.
 Keywords
코드 분할 다중 접속;전력 제어;수중 음향 센서 네트워크;시변 수중 음향 채널;
 Language
Korean
 Cited by
 References
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