• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Information Theory, IEEE Transactions on >Dynamic Allocation of Subcarriers and Transmit Powers in an OFDMA Cellular Network
【24h】

Dynamic Allocation of Subcarriers and Transmit Powers in an OFDMA Cellular Network

机译：OFDMA蜂窝网络中子载波和发射功率的动态分配

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 the problem of minimizing outage probabilities in the downlink of a multiuser, multicell orthogonal frequency division multiple access (OFDMA) cellular network with frequency selective fading, imperfect channel state information, and frequency hopping. The task is to determine the allocation of powers and subcarriers for users to ensure that the user outage probabilities are as low as possible. We formulate a min–max outage probability problem and solve it under the constraint that the transmit power spectrum at each base station is flat. In particular, we obtain a subchannel allocation algorithm that has complexity $O(L log L)$ in $L$ , the number of users in the cell. We also consider suboptimal but implementable approaches with and without the flat transmit power spectrum constraint. We conclude that the flat transmit spectrum approach has merit, and warrants further study.
机译：本文考虑将具有频率选择性衰落，不完善的信道状态信息和跳频的多用户，多小区正交频分多址（OFDMA）蜂窝网络的下行链路中的中断概率最小化的问题。任务是确定用户的功率和子载波的分配，以确保用户的中断概率尽可能低。我们制定了最小-最大中断概率问题，并在每个基站的发射功率谱平坦的约束下进行求解。特别是，我们获得了子信道分配算法，该算法的复杂度为$ L $，即单元中用户数$ O（L log L）$。我们还考虑了带有和不带有平坦发射功率谱约束的次优但可实现的方法。我们得出的结论是，平坦发射频谱方法具有优点，值得进一步研究。

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