• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IEEE International Conference on Communications >Outage performance of NOMA in downlink SDMA systems with limited feedback
【24h】

Outage performance of NOMA in downlink SDMA systems with limited feedback

机译：反馈有限的下行SDMA系统中NOMA的中断性能

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, the outage performance of nonorthogonal multiple access (NOMA) is investigated in a downlink space division multiple access (SDMA) network with a multi-antenna base station and randomly deployed users. The NOMA technology is concurrently exploited with SDMA to further improve spectral efficiency. With limited channel state information (CSI) feedback taken into account, an analytical framework is proposed to evaluate outage performance for a given user. An expression for the outage probability is derived in closed form. Moreover, the diversity order and the effect of the number of feedback bits on the outage performance of NOMA are analyzed. Numerical results are demonstrated to verify our analytical findings and show that different from the perfect CSI case there always exists performance floor in the considered network due to limited feedback.
机译：本文研究了在具有多天线基站和随机部署用户的下行链路空分多址（SDMA）网络中非正交多址（NOMA）的中断性能。 NOMA技术与SDMA同时使用，以进一步提高频谱效率。考虑到有限的信道状态信息（CSI）反馈，提出了一个分析框架来评估给定用户的中断性能。停机概率的表达式以封闭形式导出。此外，分析了分集阶数和反馈位数对NOMA中断性能的影响。数值结果表明，可以验证我们的分析结果，并表明与理想的CSI情况不同，由于反馈有限，在所考虑的网络中始终存在性能底限。

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