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Optimal power allocation for relay strategy in a video layered multicasting cellular system
  • ISSN号：1005-8885
  • 期刊名称：《中国邮电高校学报：英文版》
  • 时间：0
  • 分类：TN929.5[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]Key Lab of Universal Wireless Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 相关基金：Sponsored by State Key Program of National Natural Science of China （ Grant No. 60832009）, Natural Science Foundation of Beijing, China （ Grant No. 4102044） , Innovative Project for Young Researchers in Central Higher Education Institutions, China （Grant No. 2009RC0119） and New Generation of Broadband Wireless Mobile Comnmnication Networks of Major Projects of National Science and Technology （ Grant No. 2009ZX03003-003-01 ）.
作者： 王成金[1], 李屹[1], 张琳[1], 纪红[1]
中文摘要：

Within a cell of cellular system,cooperative relay technique can improve the performance of multicast efficiently,but it can cause the stream frequent interruptions because of the mobility of relay terminals.A video layered cooperative relay strategy is proposed to guarantee the continuity of multicast stream and retain high-bandwidth of the cooperative relay channel.Based on the capacity analysis for layered relay channel in the strategy,the optimal power allocation is studied to maximize capacity.After analyzing and optimizing the capacity in abstract models,the study is extended to a non-fading and a Gaussian wireless channel model to satisfy the scenario of cellular system.Giving the relay nodes position or distribution of noise power,the obtained results can determine the optimal power allocation among the transmitter and relay nodes.At last,the simulation results show that the strategy and its optimal power allocation have a significant improvement on the performance.

英文摘要：

Within a cell of cellular system, cooperative relay technique can improve the performance of multicast efficiently, but it can cause the stream frequent interruptions because of the mobility of relay terminals. A video layered cooperative relay strategy is proposed to guarantee the continuity of multicast stream and retain high-bandwidth of the cooperative relay channel. Based on the capacity analysis for layered relay channel in the strategy, the optimal power allocation is studied to maximize capacity. After analyzing and optimizing the capacity in abstract models, the study is extended to a non-fading and a Ganssian wireless channel model to satisfy the scenario of cellular system. Giving the relay nodes position or distribution of noise power, the obtained results can determine the optimal power allocation among the transmitter and relay nodes. At last, the simulation results show that the strategy and its optimal power allocation have a significant improvement on the performance.

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期刊信息
  • 《中国邮电高校学报：英文版》
  • 主管单位:高教部
  • 主办单位:北京邮电大学、南邮、重邮、西邮、长邮、石邮
  • 主编：LU Yinghua
  • 地址：北京231信箱（中国邮电大学）
  • 邮编：100704
  • 邮箱：jchupt@bupt.edu.cn
  • 电话：010-62282493
  • 国际标准刊号：ISSN：1005-8885
  • 国内统一刊号：ISSN：11-3486/TN
  • 邮发代号:2-629
  • 获奖情况:
  • 国内外数据库收录:
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  • 被引量:127