Threshold-based TOA estimation in IR-UWB energy detection receiver

被引：0
|
作者：
Jiang X.-Y. [1 ]
Zhang H.-S. [1 ]
Wang W. [1 ]
Wang X.-B. [1 ]
机构：
[1] School of Control Science and Engineering, Shandong University
来源：
Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology | 2011年 / 33卷 / 06期
关键词：
Energy detection; False alarm probability; Threshold; Time Of Arrival (TOA) estimation;
D O I：
10.3724/SP.J.1146.2010.01187
中图分类号：
学科分类号：
摘要：
In order to design precise and feasible ranging method with Impulse Radio Ultra Wide Band (IR-UWB) signal during energy detection, two new Time Of Arrival (TOA) estimation algorithms based on optimal and suboptimal thresholds are respectively proposed. For optimal method, with the relationship between energy's statistics in receiver and small-scale attenuation, a closed form of threshold is derived, and the TOA estimation is obtained under the Minimum Mean Square Error (MMSE). For suboptimal method based on optimal threshold analysis, a recursive form of threshold selection using Newton iteration is developed with false alarm probability constraint. Through simulations, compared with other similar algorithms, the optimal method enhances greatly the ranging accuracy, the suboptimal method is easier to implement while its performance reduces less.
引用
收藏
页码：1361 / 1366
页数：5
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