首页> 外文会议>2011 IEEE International Conference on Communications >Closed-Form Expressions for the Exact Cramer-Rao Bounds of Timing Recovery Estimators from BPSK and Square-QAM Transmissions
【24h】

Closed-Form Expressions for the Exact Cramer-Rao Bounds of Timing Recovery Estimators from BPSK and Square-QAM Transmissions

机译:BPSK和Square-QAM传输中定时恢复估计量的精确Cramer-Rao界的闭式表达式

获取原文

摘要

In this paper, we derive for the first time analytical expressions for the Cramer-Rao lower bounds (CRLBs) of timing recovery estimators from binary phase shift keying (BPSK) and square quadrature amplitude modulation (QAM) transmissions. The bounds are derived in the presence of additive white Gaussian noise AWGN). Moreover the carrier phase and frequency are considered as unknown nuisance parameters. Our new analytical expressions reveal that the CRLBs do not depend on the corresponding time delay parameter and that they do not change widely from one modulation order to another. They also corroborate previous works that computed them empirically and provide a meaningful tool for their quick and easy evaluation.
机译:在本文中,我们首次从二进制相移键控(BPSK)和平方正交幅度调制(QAM)传输中导出了时序恢复估计器的Cramer-Rao下界(CRLB)的解析表达式。在存在加性高斯白噪声(AWGN)的情况下得出边界。此外,载波相位和频率被认为是未知的干扰参数。我们的新分析表达式表明,CRLB不依赖于相应的时延参数,并且它们不会从一个调制阶到另一个调制阶变化很大。他们还证实了以前的经验,对这些经验进行了计算,并为快速,轻松地进行评估提供了有意义的工具。

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