TOA estimation based on normalized threshold for IR-UWB systems

被引：0

作者：

Zhai, Shuang ^{[1
,2
]}

Qian, Zhi-Hong ^{[1
]}

Wang, Xue ^{[1
]}

Sun, Da-Yang ^{[1
]}

机构：

[1] College of Communication Engineering, Jilin University, Changchun

[2] Institute of Computer Science and Engineering, Changchun University of Technology, Changchun

来源：

Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications | 2015年 / 38卷 / 04期

关键词：

Impulse radio-ultra wideband; Threshold comparison; Two-step-integral time of arrival estimated;

D O I：

10.13190/j.jbupt.2015.04.005

中图分类号：

学科分类号：

摘要：

The impulse radio-ultra wideband (IR-UWB) ranging algorithm based on energy detection is widely applied, improving ranging accuracy turns out to be a key point that draws many researchers' attentions. A new two-step-integral time of arrival (TOA) estimation algorithm based on threshold comparison (TC) was proposed, and the corresponding threshold-setting algorithm was also put forward. The ranging accuracy of the TC algorithm for long integration period is lower than that, for short, the two-step-integral TOA estimation algorithm is built up by one more short integration period detection based on long integration period; according to the functional relation between the optimal normalized threshold and advanced maximum energy sample to mean ratio-TC (AMMR-TC) is proposed and the optimal normalized threshold is set. Due to the performance of AMMR-TC is worse than maximum to minimum energy sample ratio-TC (MMR-TC) a little in short integration period, a novel AMMR-MEAN-TC algorithm is put forward in the paper by combining the two algorithms above. Simulations indicate that the ranging accuracy had been improved. © 2015, Beijing University of Posts and Telecommunications. All right reserved.

引用

页码：19 / 23

页数：4