English  |  正體中文  |  简体中文  |  Items with full text/Total items : 69561/69561 (100%)
Visitors : 23083920      Online Users : 462
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version

    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/63171

    Title: 應用於智慧生活與照護之節能感測網路---子計畫二:具頻譜感知與壓縮感測功能之智慧感測網路通訊技術( I );Communication Techniques of Spectrum Cognition and Compressed Sensing for Intelligent Sensor Network (I)
    Authors: 蔡佩芸
    Contributors: 國立中央大學電機工程學系
    Keywords: 電信工程;護理學
    Date: 2013-12-01
    Issue Date: 2014-03-17 14:20:48 (UTC+8)
    Publisher: 行政院國家科學委員會
    Abstract: 研究期間:10205~10304;Recently, due to the advances in wireless communication, MEMS, VLSI technology, small equipment with capabilities of communication, sensing, computation, and storage gradually becomes feasible. In addition, the powerful cloud computing enables various amazing applications through internet. Hence, based on these factors, the concept of “Internet-of-Things” (IoT) is developed. In the scope of “IoT”, besides the conventional communications between humans, more links are introduced, namely, human to machine (H2M), machine to human (M2H) and machine to machine (M2M). On the other hand, the data is not simply delivered between machine nodes. Because the computation capability can be upgraded in each machine node, simple and preliminary decision and analysis are performed to bring the feature of Intelligence in IoT. This project develops the communication techniques of spectrum cognition and compressed sensing for intelligent sensor networks. To solve the communication problems from limited spectrum resources and to enhance the spectrum utilization, we aim to use the technique of spectrum cognition that utilizes the spectrum as a secondary user without interfering the primary licensed users. Furthermore, it also can reduce the interference problem for numerous nodes in M2M networks. Secondly, the major power consumption in the sensor network comes from the communications. Hence, we plan to design a compressed sensing engine that can reduce the samples from various BIO or MEMS sensors for transmission. Due to the characteristics of ad hoc network, we tend to rely on distributed algorithms. Next, the relationship between spectrum efficiency and energy efficiency is going to be surveyed so that the power consumption for signal transmission can be suppressed aggressively by a suitable modulation scheme. The dynamic voltage and frequency scaling (DVFS) is going to be adopted to achieve the goal of a low power design. To convey the compressed image data, the transmission rate is targeted at 2 Mbps, a little bit higher than conventional wireless sensor networks. And the operation modes can be classified as sleep mode, low duty mode and standard mode. Finally, this communication digital signal processor together with the smart video processor, smart sensor interface, power and clock management, wireless powering and various sensors including BIO sensors, MEMS sensors and image sensors are integrated with the help of design automation tools. We aim to accomplish the design of a sensing system in this intelligent sensor network for life and care.
    Relation: 財團法人國家實驗研究院科技政策研究與資訊中心
    Appears in Collections:[電機工程學系] 研究計畫

    Files in This Item:

    File Description SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明