Low-complexity TOA estimation using sawtooth-waveform matching in non-coherent impulse radio systems

ZHENG Lin1; FU Jie-lin1; LIU Zheng-hong1; QIU Hong-bing1; LIN Ji-ming1

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Low-complexity TOA estimation using sawtooth-waveform matching in non-coherent impulse radio systems

更新时间：2024-10-14

- Low-complexity TOA estimation using sawtooth-waveform matching in non-coherent impulse radio systems
- Vol. 32, Issue 5, Pages: 33-39(2011)
- 作者机构：
  
  1. 桂林电子科技大学认知无线电与信息处理省部共建教育部重点实验室
  2. 北京邮电大学信息与通信工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN925
- Published：2011
- 稿件说明：
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ZHENG Lin1, FU Jie-lin1, LIU Zheng-hong1, et al. Low-complexity TOA estimation using sawtooth-waveform matching in non-coherent impulse radio systems[J]. 2011, 32(5): 33-39.
DOI：

ZHENG Lin1, FU Jie-lin1, LIU Zheng-hong1, et al. Low-complexity TOA estimation using sawtooth-waveform matching in non-coherent impulse radio systems[J]. 2011, 32(5): 33-39. DOI：

摘要

采用非相干能量检测

提出了一种负斜率锯齿波相关搜索的算法

其结合接收多径脉冲信号的包络特征

获得了次优的估计性能。另外

通过对于锯齿波斜率(锯齿波宽度)的分析给出了在非视距条件下无偏估计的条件

理论分析了TOA估计平均绝对误差

推导出其性能解。仿真结果验证了算法的性能

并通过对结果的分析给出了在视距和非视距环境、不同信噪比下锯齿波斜率的最优取值范围。该方法解决了估计复杂度、抗多径和非视距环境下的顽健性问题。

Abstract

In non-coherent impulse system

an acquisition scheme using negative-slope saw-tooth-waveform matching was proposed.The scheme obtained the sub-optimal estimation performance by utilizing the characteristic of multipath profile.In the proposed scheme

the slope of saw-tooth waveform was analyzed to achieve unbiased estimation in NLOS environment

and the theoretical solution of mean-absolute error（MAE） was derived.Simulations verify the outstanding performance of this scheme in NLOS and low signal-to-noise ratio（SNR） environment.

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