Case study zero-effort crowdsourcing for indoor localization

Assignment Help Case Study
Reference no: EM13309388

Radio Frequency (RF) fingerprinting, based onWiFi or cellular signals, has been a popular approach to indoor localization. However, its adoption in the real world has been stymied by the need for sitespecific calibration, i.e., the creation of a training data set comprising WiFi measurements at known locations in the space of interest. While efforts have been made to reduce this calibration effort using modeling, the need for measurements from known locations still remains a bottleneck. In this paper, we present Zee - a system that makes the calibration zero-effort, by enabling training data to be crowdsourced without any explicit effort on the part of users.

Zee leverages the inertial sensors (e.g., accelerometer, compass, gyroscope) present in the mobile devices such as smartphones carried
by users, to track them as they traverse an indoor environment,while simultaneously performing WiFi scans. Zee is designed to run in the background on a device without requiring any explicit user participation. The only site-specific input that Zee depends on is a map showing the pathways (e.g., hallways) and barriers (e.g., walls). A significant challenge that Zee surmounts is to track users without any a priori, user-specific knowledge such as the user's initial location, stride-length, or phone placement. Zee employs a suite of novel techniques to infer location over time: (a) placement-independent step counting and orientation estimation, (b) augmented particle filtering to simultaneously estimate location and user-specific walk characteristics such as the stride length, (c) back propagation to go back and improve the accuracy of localization in the past, and (d) WiFi-based particle initialization to enable faster convergence. We present an evaluation of Zee in a large office building.

 

 

Attachment:- chintalapudi.pdf


Attachment:- mobicom.pdf

Reference no: EM13309388

Case - starbuck mission - social responsibility

Case - Starbuck's Mission: Social Responsibility and Brand Strength. Why do you think Starbucks has been so concerned with social responsibility in its overall corporate strat

Examine the main structural and process changes

Review the Case Study: Implementing Culture Change in Food Service. Next, examine the main structural and process changes that will be required to design and implement famil

Define the term safety climate

Briefly outline the legal responsibilities that employers have to ensure a safe workplace. Define the term 'safety climate' (drawing on appropriate academic literature) and Ex

Describe the impact and the vulnerability of the scada

Describe the impact and the vulnerability of the SCADA / Stuxnet Worm on the critical infrastructure of the United States. Describe the methods to mitigate the vulnerabilities

What must have been the reason of dis-satisfaction of

a) What must have been the reason of dis-satisfaction of employees regarding this decision? b) Why the reasons employees are resist change in the organization? c) If you were

Explain how a buyers access toreal-time sales patterns

Why is that first-hand experience sovaluable? Explain how a buyer's access toreal-time sales patterns of a specific retail locationcan influence their purchasing decisions.

Identify and analyze ethical issues faced by managers

Read the mini-case study, "The Case of the Million-Dollar Decision," Prepare an evaluation of this case study that demonstrates your ability to identify and analyze ethical

Compare and contrast the current market value of each stock

Provide a definition explaining the information each Data Item provides you as a potential investor in the stock - Compare and contrast the current market value of each stoc

Reviews

Write a Review

 
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd