Distance Estimation From a Diffusive Process: Theoretical Limits and Experimental Results

IF 2.4 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Fabio Broghammer;Siwei Zhang;Thomas Wiedemann;Peter A. Hoeher
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引用次数: 0

Abstract

Estimating the distance between the source of a diffusive process and a receiver has a variety of applications, ranging from gas source localization at the macro-scale to molecular communication at the micro-scale. Distance information can be extracted from features of the observed particle concentration, e.g., its peak. This paper derives the Cramér-Rao lower bound (CRB) for distance estimation given the advection-diffusion model for absorbing receivers, which is the fundamental limit of any distance estimator. Furthermore, CRBs are obtained for estimators using only information about the observed peak. A maximum-likelihood estimator using the entire signal and two estimators based on peak detection are deduced. The derived CRBs are used to study the effect of channel parameters on the estimation performance. Finally, the performance of the proposed estimators is verified by comparing the root mean squared errors with their theoretical bounds in a simulation, and preliminary experimental results are presented.
扩散过程的距离估计:理论极限和实验结果
估算扩散过程的源和接收器之间的距离有多种应用,从宏观尺度的气源定位到微观尺度的分子通信。距离信息可以从观察到的颗粒浓度的特征中提取,例如其峰值。本文在吸收式接收器的平流-扩散模型下,导出了距离估计的Cramér-Rao下界(CRB),这是任何距离估计的基本极限。此外,仅使用关于观测到的峰值的信息来获得用于估计器的CRB。推导了一个使用整个信号的最大似然估计器和两个基于峰值检测的估计器。导出的CRB用于研究信道参数对估计性能的影响。最后,通过将均方根误差与理论界进行仿真比较,验证了所提出的估计量的性能,并给出了初步的实验结果。
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来源期刊
CiteScore
3.90
自引率
13.60%
发文量
23
期刊介绍: As a result of recent advances in MEMS/NEMS and systems biology, as well as the emergence of synthetic bacteria and lab/process-on-a-chip techniques, it is now possible to design chemical “circuits”, custom organisms, micro/nanoscale swarms of devices, and a host of other new systems. This success opens up a new frontier for interdisciplinary communications techniques using chemistry, biology, and other principles that have not been considered in the communications literature. The IEEE Transactions on Molecular, Biological, and Multi-Scale Communications (T-MBMSC) is devoted to the principles, design, and analysis of communication systems that use physics beyond classical electromagnetism. This includes molecular, quantum, and other physical, chemical and biological techniques; as well as new communication techniques at small scales or across multiple scales (e.g., nano to micro to macro; note that strictly nanoscale systems, 1-100 nm, are outside the scope of this journal). Original research articles on one or more of the following topics are within scope: mathematical modeling, information/communication and network theoretic analysis, standardization and industrial applications, and analytical or experimental studies on communication processes or networks in biology. Contributions on related topics may also be considered for publication. Contributions from researchers outside the IEEE’s typical audience are encouraged.
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