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题名: Direct mapping OFDM-based transmission scheme for underwater acoustic multimedia
作者: Chin-Feng Lin;Chia-Chang Lee;Shiou-Hung Lai;Shun-Hsyung Chang;Ching-Hsiang Tseng;Tzong-Dar Wu;Hoang-Yan Lu;Hsien-Sen Hung;Fu-Sheng Lu
贡献者: NTOU:Department of Electrical Engineering
关键词: Direct mapping;OFDM;underwater acoustic multimedia
日期: 2010-09
上传时间: 2011-10-21T02:40:48Z
出版者: International Symposium on Parallel and Distributed Processing with Applications
摘要: Abstract:In this paper, we propose a direct mapping (DM) orthogonal frequency division multiplexing (OFDM) based transmission scheme for underwater acoustic multimedia (UAM). We adopt DM multi-input multi-output (MIMO), power assignment mechanism, OFDM, adaptive modulation, and unequal error protection in the UAM system. The proposed underwater acoustic multimedia system employs high power, low speed modulation, and schemes providing significant error protection for the transmission of sensor data messages requiring a stringent bit-error rate (BER). In contrast, low power, high speed modulation, and less capable error protection schemes are provided for messages that can tolerate a high BER. Simulation results show that the proposed scheme can not only fulfill the quality of services (QoS) required by a UAM system, but also achieve the mission of maximum transmission bit rates or minimum transmission power.
關聯: pp.138-141
显示于类别:[電機工程學系] 演講及研討會


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