• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Telecommunication systems: Modeling, Analysis, Design and Management >A combined technique for carrier frequency offset estimation and peak-to-average power ratio reduction in OFDM systems using null subcarriers and Cuckoo search algorithm
【24h】

A combined technique for carrier frequency offset estimation and peak-to-average power ratio reduction in OFDM systems using null subcarriers and Cuckoo search algorithm

机译：使用空副载波和布谷鸟搜索算法的OFDM系统中的载波频率偏移估计和峰均功率比降低的组合技术

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 presents a novel generic method for the carrier frequency offset (CFO) estimation and reduction of peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing based wireless communication systems. Estimation of CFO using null subcarriers embedded in one or more pilot symbol is one of the best known CFO estimation techniques that achieve an estimation range of inverse of the sampling interval with low implementation complexity. We propose to exploit a few null subcarriers in the pilot symbol for PAPR reduction by switching with some data subcarriers in the data block of which the PAPR is intended to be minimized. We define a new cost function for the PAPR reduction at the transmitter and CFO estimation at the receiver and the computational complexity of its evaluation is made significantly low by applying Cuckoo search optimization algorithm. Also, the proposed method requires less side information to be send to the receiver as compared to many of the prevailing PAPR reduction methods. Computer simulation studies reveal that the proposed combined technique offers significant performance advantage for both PAPR reduction and CFO estimation concurrently.
机译：本文提出了一种新的通用方法，用于在基于正交频分复用的无线通信系统中估算载波频率偏移（CFO）和降低峰均功率比（PAPR）。使用嵌入在一个或多个导频符号中的空子载波的CFO估计是最公知的CFO估计技术之一，其以低的实现复杂度实现了采样间隔的倒数的估计范围。我们建议通过在导频符号中利用一些空子载波来减少PAPR，方法是与打算将其PAPR最小化的数据块中的一些数据子载波进行切换。我们为发送器的PAPR降低和接收器的CFO估计定义了一个新的成本函数，通过应用杜鹃搜索优化算法，显着降低了其评估的计算复杂度。而且，与许多流行的PAPR降低方法相比，所提出的方法需要更少的辅助信息发送到接收器。计算机仿真研究表明，提出的组合技术为同时降低PAPR和CFO估计提供了显着的性能优势。

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