English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28326/40319
Visitors : 4092723      Online Users : 104
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/28446

Title: Downlink Power Control in Multi-Code CDMA Mobile Medicine System
Authors: Chin-Feng Lin;Wen-Thong Chang;Hsin-Wang Lee;Shih-Ii Hung
Contributors: NTOU:Department of Electrical Engineering
Keywords: Multi-code CDMA;Downlink power control;Mobile medicine;ECG signal
Date: 2006-05
Issue Date: 2011-10-21T02:37:36Z
Publisher: Medical and Biological Engineering and Computing
Abstract: Abstract:In this paper, we propose a downlink power-control mechanism to be applied in a multi-code code division multiple access (CDMA) mobile medicine system. The mobile medicine system can provide (i) measured blood pressure and body temperature, (ii) medical signals measured by the electrocardiogram (ECG) device, (iii) mobile patient's history, (iv) G. 729 audio signals, (v) Joint Photographic Experts Group 2000 Medical images and Moving Picture Experts Group 4 charge-coupled device sensor video signals. By utilizing a multi-code CDMA spread spectrum communication system with downlink power-control strategy, it is possible for this system to meet the quality of service requirements of a mobile medicine network. In addition, such a system can maximize the resource utilization. For different messages to be sent, the power is controlled according to the requisite bit error rate (BER). Higher transmission power is given to the media with lower BER requirement. Numerical analysis shows that the ratios of transmission power for voice, video, and data virtual channels is approximately 1: 2: 13 when the BERs for voice, video, and data are 10 boolean AND(- 3), 10 boolean AND(- 4), and 10 boolean AND(- 7), respectively. This power ratio is similar to the ratio of signal-to-noise plus interference power ratio for voice, video, and data during transmission. For the purpose of verifying the proposed argument, a simulation has been done and the results match the derivation very well.
Relation: 44(5), pp.437-444
URI: http://ntour.ntou.edu.tw/handle/987654321/28446
Appears in Collections:[電機工程學系] 期刊論文

Files in This Item:

File Description SizeFormat

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


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback