首页> 外文期刊>IEEE Transactions on Information Theory >Sum-Rate Optimal Multicode CDMA Systems: An Equivalence Result
【24h】

Sum-Rate Optimal Multicode CDMA Systems: An Equivalence Result

机译:总速率最佳多码CDMA系统:等效结果

获取原文
获取原文并翻译 | 示例
           

摘要

In this paper, the sum rate of a multicode code-division multiple-access (CDMA) system with asymmetric-power users is maximized, given a processing gain and the power profile of users. Unlike the sum-rate maximization for a single-code CDMA system, the optimization requires the joint optimal distribution of each user's power to its multiple data streams as well as the optimal design of signature sequences. The crucial step is to establish an equivalence of the multicode CDMA system to restricted frequency-division multiple-access (FDMA) and time-division multiple-access (TDMA) systems. The CDMA system has upper limits on the numbers of multicodes of users, whereas the FDMA system has upper limits on the bandwidths, and the TDMA system has upper limits on the duty cycles of users. The equivalence facilitates the complete characterization of the maximum sum rate of the multicode CDMA system and also provides new insights into single- and multicode CDMA systems in terms of the parameters of the equivalent FDMA and TDMA systems.
机译:在给定处理增益和用户功率分布的情况下,本文将具有不对称功率用户的多码码分多址(CDMA)系统的总速率最大化。与单码CDMA系统的总速率最大化不同,优化需要将每个用户的功率联合优化分配到其多个数据流,以及签名序列的优化设计。关键步骤是建立与限制频分多址(FDMA)和时分多址(TDMA)系统等效的多码CDMA系统。 CDMA系统在用户的多码数量上有上限,而FDMA系统在带宽上有上限,而TDMA系统在用户的占空比上有上限。等效性有助于完整描述多码CDMA系统的最大和速率,并且就等效FDMA和TDMA系统的参数而言,也为单码和多码CDMA系统提供了新的见解。

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