Improved orthogonal frequency division multiplexing and time difference of arrival based indoor positioning system | |
| Author | Khan, Imran Akbar |
| Call Number | AIT RSPR no.TC-16-02 |
| Subject(s) | Orthogonal frequency division multiplexing Indoor positioning systems (Wireless localization) Wireless communication systems |
| Note | A research submitted in partial fulfillment of the requirements the degree of Master of Engineering in Telecommunications |
| Publisher | Asian Institute of Technology |
| Abstract | The main objective of this research is to nd out the precise solution of indoor location by using Orthogonal frequency-division multiplexing (OFDM) using the TDOA (Time Di erence of Arrival) technique. During the last ve years or so, there was a wide range of development of outdoor positioning services such as Global Positioning System (GPS) and Google mapping and Google Street view has been introduced to every smart phone as well as for tablets. While Outdoor positioning has been improving signi cantly and also warmly welcomed by the public, indoor positioning has been mostly limited due to various reasons. Main reasons are high expenses and setting up proper methods and environments. GPS does not work on indoor environments and also there is little to no coverage of GPS on indoor areas. So this research study focuses on precise solution of indoor localization using OFDM techniques. Here, we have measured the OFDM channel estimation using LSE algorithm. Also applying Maximum Likelihood (ML) symbol-time and carrier-frequency o set estimator in OFDM systems. By using ML, timing o set and frequency o set are measured by which performance metrics are also measured. By applying, it is shown that the frequency estimator can be applied in the tracking method and time estimator can be applied in acquisition method. |
| Year | 2016 |
| Type | Research Study Project Report (RSPR) |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Attaphongse Taparugssanagorn; |
| Examination Committee(s) | Teerapat Sanguankotchakorn;Nakamura, Shinichi; |
| Scholarship Donor(s) | Asian Development Bank-Japan Scholarship Program (ADB-JSP); |
| Degree | Research Studies Project Report (M.Eng.) - Asian Institute of Technology, 2016 |