...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of communication systems >Performance analysis of nonorthogonal multiple access-based underlay cognitive relay network
【24h】

Performance analysis of nonorthogonal multiple access-based underlay cognitive relay network

机译：基于非正交多址底层认知继电器网络的性能分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper considers cooperative non-orthogonal multiple access (NOMA) scheme in an underlay cognitive radio (CR) network. A single-cell downlink cooperative NOMA system has been considered for the secondary network, consisting of a base station (BS) and two secondary users, ie, a far user and a near user. The BS employs NOMA signaling to send messages for the two secondary users where the near user is enabled to act as a half-duplex decode-and-forward (DF) relay for the far user. We derive exact expressions for the outage probability experienced by both the users and the outage probability of the secondary system assuming the links to experience independent, nonidentically distributed Rayleigh fading. Further, we analyze the ergodic rates of both the users and the ergodic sum rate of the secondary network. The maximum transmit power constraint of the secondary nodes and the tolerable interference power constraint at the primary receiver are considered for the analysis. Further, the interference caused by the primary transmitter (PT) on the secondary network is also considered for the analysis. The performance of the proposed CR NOMA network has been observed to be significantly better than a CR network that uses conventional orthogonal multiple access (OMA) scheme. The analytical results are validated by extensive simulation studies.
机译：本文认为在底层认知无线电（CR）网络中的协同非正交多址（NOMA）方案。已经考虑了由基站（BS）和两个辅助用户，即远用户和近用户组成的次要网络的单个小区下行链路协作NOMM系统。 BS采用NOMA信令发送用于两个辅助用户的消息，其中近用户能够充当远端用户的半双工解码（DF）中继。我们推出了对用户经历的中断概率和二级系统的停电概率的确切表达，假设具有独立的，非线性分布瑞利衰落的链接。此外，我们分析了用户和辅助网络的遍历总和速率的遍历率。辅助节点的最大发射功率约束和主接收器处的可容许干扰功率约束用于分析。此外，还考虑由次要网络上的主发射器（PT）引起的干扰用于分析。已经观察到所提出的CR NOMA网络的性能明显优于使用传统正交多通道（OMA）方案的CR网络。通过广泛的模拟研究验证了分析结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号