WLAN Positioning Systems [Elektronisk resurs] Principles and Applications in Location-Based Services.

• Cover; WLAN Positioning Systems; Title; Copyright; Dedication; Contents; Preface; Part I: History and applications; 1 Positioning through the ages; 1.1 Origins of navigation; 1.2 The age of traditional navigation; 1.2.1 Navigation based on landmarks; 1.2.2 Celestial navigation; 1.2.3 The compass; 1.3 The age of exploration; 1.4 The age of modern navigation; 1.4.1 Radio-based systems; 1.4.2 Satellite-based systems; 1.5 Chapter summary; 2 Location-based services; 2.1 Market potential; 2.1.1 Industry analysis; Buyer power; Supplier power; Competitive rivalry; Industry growth rate. 
• Number of competitorsCosts; Size of competitors; Product differentiation; Exit barriers; Threat of entry; Substitutes; 2.1.2 Assessment summary; 2.2 Applications of location-based services; 2.2.1 Navigation; 2.2.2 Emergency and security services; 2.2.3 Network management and security; 2.2.4 Information management; 2.2.5 Social networking and entertainment; 2.2.6 Marketing; 2.2.7 Context awareness; 2.3 Ethical considerations in location computing; 2.3.1 Consent; 2.3.2 Privacy; 2.4 Chapter summary; 3 Positioning techniques; 3.1 The location stack; 3.2 Proximity detection; 3.3 Lateration. 
• 3.3.1 Circular lateration3.3.2 Hyperbolic lateration; 3.4 Angulation; 3.5 Fingerprinting; 3.6 Dead reckoning; 3.7 Computer vision; 3.8 Comparison of positioning techniques; 3.9 Chapter summary; 4 Positioning systems; 4.1 The Global Positioning System; Historical perspective; Technical overview; 4.2 Cellular-based positioning systems; Historical perspective; Technical overview; 4.3 Ultrasound and infrared systems; Historical perspective; Technical overview; 4.4 Wireless local area network (WLAN) positioning; Historical perspective; Technical overview; 4.5 Comparison of positioning systems. 
• 4.5.1 Evaluation criteria4.5.2 Evaluation; 4.6 Chapter summary; Part II: Signal processing theory; 5 Positioning in wireless local area networks; 5.1 Wireless local area networks; 5.2 Radio signal features in WLANs; 5.3 Characteristics of the example environment; 5.4 Properties of received signal strength; 5.4.1 Spatial properties; 5.4.2 Temporal properties; 5.5 Modeling the RSS-position relationship; 5.5.1 Parametric modeling; 5.5.2 Fingerprinting-based methods; 5.6 Technical challenges in RSS-based positioning; 5.7 Chapter summary; 6 Memoryless positioning. 
• 6.1 The problem of statistical memoryless positioning6.1.1 Optimality criteria; Maximization of the likelihood density; Minimization of the mean square error; 6.1.2 Statistical radio map model; 6.2 Density estimation; 6.2.1 The histogram; Univariate histogram estimate; Histogram bin width and origin; Multivariate histogram estimate; Cautionary notes; 6.2.2 Kernel density estimator; 6.2.3 Cautionary notes; 6.3 Memoryless position estimators; 6.3.1 Maximum likelihood estimation; 6.3.2 Minimum mean square error estimate; 6.4 Comments on the estimators; 6.4.1 Summary; 6.4.2 Complexity. 
• 6.4.3 Practical considerations. 

• Describes the relevant detection and estimation theory, sets out key design challenges and examines practical design trade-offs and experimental results. 

Ämnesord

Aids to navigation. 

Global Positioning System. 

Mobile communication systems -- Technological innovations. 

Wireless communication systems -- Technological innovations. 

Wireless LANs. 

Genre

Electronic books.  (LCSH)

Klassifikation

TK5103.2 .K874 2012 (LCC)

621.384 (DDC)

Pcjc (kssb/8 (machine generated))