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Optimal relay allocation strategy based on maximum rate in two-user multi-relay system
  • ISSN号：1001-0548
  • 期刊名称：《电子科技大学学报》
  • 时间：0
  • 分类：TN929.533[电子电信—通信与信息系统;电子电信—信息与通信工程] TP316[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术]
  • 作者机构：[1]National Key Laboratory of Communications, Universityof Electronic Science and Technology of China, Chengdu610054, China, [2]Business School of Sichuan University, Chengdu 610065, China
  • 相关基金：This study was supported by the National Natural Science Foundation of China under Grant numbers 61032002, 61101090, and 60902026, and the Chinese Important National Science ＆ Technology Specific Projects under Grant number 2011ZX0 3001-007-01.
作者： Ji Liu[1], Xia Lei[1], Haibo Cao[1], Maozhu Jin[2]
关键词： 单用户系统, 中继系统, 分配策略, 最大速率, 基础, 分集增益, 低信噪比, 继电器, Cooperative communication , Relay allocation , Total rate
中文摘要：

合作通讯能经由继电器提高无线网络的性能，并且那么怎么分配继电器获得系统的最佳的性能是一个关键问题。在这篇文章，我们考虑二个用户经由继电器与目的地交流的一个合作系统，并且这些继电器用电报与目的地连接。通过理论推导和分析，我们在设定提交阀值的继电器的条件下面基于最大的率获得最佳的继电器分配策略。结果证明系统让最大的传播当继电器在用户之间相等地被分配时，评价。而且与单个用户的系统相比，结果证明那差异获得在低 SNR 在表演上有明确的效果。然而与增加的 SNR，差异的影响逼近系统率将被减少。在高 SNR，多重用户的隧道的空间自由度被带提高表演而不是差异获得。数字结果证明分配策略和结论的有效性到达了这研究，但是我们到目前为止不在文学发现类似的争论，为有这研究的结论的比较。

英文摘要：

Cooperative communication can enhance the performance of wireless networks via relays, and so how to allocate the relay to obtain the optimal performance of system is a key issue. In this article, we consider a cooperative system where two users communicate with the destination via relays, and these relays connect with the destination by cable. Through the theoretical derivation and analysis, we obtain the optimal relay allocation strat- egy based on the maximum rate under the condition of relays setting forwarding thresholds. The result shows that the system has the maximum transmission rate when the relays are allocated equivalently between users. Moreover, compared with the single-user system, the results prove that diversity gain has a decisive effect on the performance in low SNR. However, with the SNR increasing, the impact of diversity gain on system rate will be reduced. In high SNR, spatial freedom degree of the channel of multiple users is brought to enhance the performance instead of diversity gain. Numerical results demonstrate the validity of the allocation strategy and conclusion arrived in this study, but we do not find the similar arguments in the literature so far, for comparison with the conclusion of this study.

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期刊信息
  • 《电子科技大学学报》
  • 北大核心期刊（2011版）
  • 主管单位:国家教育部
  • 主办单位:电子科技大学
  • 主编：周小佳
  • 地址：成都市成华区建设北路二段四号
  • 邮编：610054
  • 邮箱：xuebao@uestc.edu.cn
  • 电话：028-83202308
  • 国际标准刊号：ISSN：1001-0548
  • 国内统一刊号：ISSN：51-1207/T
  • 邮发代号:62-34
  • 获奖情况:
  • 全国优秀科技期刊,第二届全国优秀科技期刊二等奖,两次获国家新闻出版署、国家教委“全国高校自然科...,中国期刊方阵双百期刊
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  • 被引量:12314