基于数据删失的无线传感器网络低复杂度信道估计
发布时间:2024-07-08 18:27
无线传感器网络近年来发展迅速,由于其具有体积小、自组织性、布置速度快、容错性强等优良性能以及众多的应用领域,现在已经成为了无线通信网络中最重要的组成部分之一。在健康方面,无线传感器可作为探测器进入人的身体或附着于身体表面,帮助医生诊断病情或治疗疾病;在农业方面,推进智能农业的进步与发展,方便农民,通过对农田、作物数据的实时分析,合理规划,增加产量;在工业上,可作为工业监控,监控工业生产中的各项指标,保证安全,提高产品合格率;气象预测上,由于无线传感器网络的自组织性与快速布置性,传感器布置更方便,对地形要求更低,所获取的信息更全面,整体上可以提高气象预测的准确度;在军事上,战场环境的侦察、无人值守等都是无线传感网络的应用场景。然而,在应用这项技术的过程中,一些潜在的限制也在不断地被发现,比如电池续航能力的限制、测量精度的限制、带宽限制等。其中最重要的限制之一便是数据传输过程、数据处理过程中的能量消耗。众所周知,无线传感器网络的节点是由电力驱动的,由于其无线、快速布置的性质使其不得不使用电池的电力能源,而无法选择有线电力传输。在电能受限的条件下,延长无线传感器网络的使用寿命、提高传输效率对...
【文章页数】:64 页
【学位级别】:硕士
【文章目录】:
摘要
ABSTRACT
Acknowledgement
Nomenclature
Chapter 1 Introduction
1.1 Background
1.2 Propose and Motivation
1.3 Contributions
1.4 Dissertation Outline
Chapter 2 Literature Review
2.1 The Applications of WSNs and Design Factors
2.2 Adaptive Filtering Algorithms
2.3 Channel Estimation Algorithms
2.4 Data Censoring Techniques for WSNs
2.5 Summary
Chapter 3 Cooperative WSN System Model with Data Censoring
3.1 Cooperative WSN System with Data Censoring
3.2 Data Censoring Schemes
3.2.1 NAC scheme
3.2.2 AC scheme
3.3 Channel Estimation Framework with NAC and AC
3.4 Summary
Chapter 4 Proposed Channel Estimation Algorithms with NAC
4.1 SGD-MLE Algorithm with NAC
4.2 Newton-MLE Algorithm with NAC
4.3 Censoring Ratio Analysis with NAC
4.4 Simulations
4.4.1 MSE Performance
4.4.2 Verification of the CR Analysis
4.5 Summary
Chapter 5 Proposed Channel Estimation Algorithms with AC
5.1 LMS Algorithm with AC
5.2 SM-NLMS Algorithm with AC
5.3 RLS Algorithm with AC
5.4 Censoring Ratio Analysis for AC schemes
5.5 Computational Complexity Analysis
5.6 Simulations
5.6.1 MSE Performance
5.6.2 Verification of the CR Analysis
5.7 Summary
Conclusions
References
Author’s Publications
本文编号:4003691
【文章页数】:64 页
【学位级别】:硕士
【文章目录】:
摘要
ABSTRACT
Acknowledgement
Nomenclature
Chapter 1 Introduction
1.1 Background
1.2 Propose and Motivation
1.3 Contributions
1.4 Dissertation Outline
Chapter 2 Literature Review
2.1 The Applications of WSNs and Design Factors
2.2 Adaptive Filtering Algorithms
2.3 Channel Estimation Algorithms
2.4 Data Censoring Techniques for WSNs
2.5 Summary
Chapter 3 Cooperative WSN System Model with Data Censoring
3.1 Cooperative WSN System with Data Censoring
3.2 Data Censoring Schemes
3.2.1 NAC scheme
3.2.2 AC scheme
3.3 Channel Estimation Framework with NAC and AC
3.4 Summary
Chapter 4 Proposed Channel Estimation Algorithms with NAC
4.1 SGD-MLE Algorithm with NAC
4.2 Newton-MLE Algorithm with NAC
4.3 Censoring Ratio Analysis with NAC
4.4 Simulations
4.4.1 MSE Performance
4.4.2 Verification of the CR Analysis
4.5 Summary
Chapter 5 Proposed Channel Estimation Algorithms with AC
5.1 LMS Algorithm with AC
5.2 SM-NLMS Algorithm with AC
5.3 RLS Algorithm with AC
5.4 Censoring Ratio Analysis for AC schemes
5.5 Computational Complexity Analysis
5.6 Simulations
5.6.1 MSE Performance
5.6.2 Verification of the CR Analysis
5.7 Summary
Conclusions
References
Author’s Publications
本文编号:4003691
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