...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Communications >The effect of diversity on a burst-mode carrier-frequency estimator in the frequency-selective multipath channel
【24h】

The effect of diversity on a burst-mode carrier-frequency estimator in the frequency-selective multipath channel

机译：分集对频率选择多径信道中突发模式载波频率估计器的影响

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 describes a carrier-frequency offset estimator derived using maximum-likelihood techniques. The estimator is designed for a digital space-diversity receiver, operating in a wide-band frequency-selective multipath fading channel. The estimator is suited to a burst-mode time-division-multiple-access system, because the estimate is formed in an open-loop manner, and relies on a training sequence normally used in burst-mode systems. The main advantage is that it does not require channel state information; rather, it only requires knowledge of the auto-correlation of the channel. Simulation results show the estimator to be unbiased over a wide frequency range. The normalized error standard deviation is shown to be 0.0015 across the frequency offset range for a receiver with four diversity branches, when the normalized channel delay spread is 0.1, the signal-to-noise ratio (SNR) is 10 dB, and the training sequence length is 23 symbols. It is found that, for most parameter configurations, there is approximately a factor of two improvement in the estimate error standard deviation when the antenna diversity is doubled.
机译：本文描述了使用最大似然技术得出的载波频率偏移估计器。该估计器是为在宽带频率选择性多径衰落信道中工作的数字空间分集接收机而设计的。该估计器适合于突发模式时分多址系统，因为该估计是以开环方式形成的，并且依赖于突发模式系统中通常使用的训练序列。主要优点是它不需要信道状态信息。相反，它只需要知道信道的自相关。仿真结果表明，该估计器在很宽的频率范围内是无偏的。对于具有四个分集分支的接收机，在整个频率偏移范围内，归一化误差标准偏差显示为0.0015，当归一化信道延迟扩展为0.1时，信噪比（SNR）为10 dB，并且训练序列长度为23个符号。已经发现，对于大多数参数配置，当天线分集加倍时，估计误差标准偏差大约有两个改善的因子。

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