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Outdoor to Indoor Radio Wave Propagation For Wireless in Buildings Solutions
KTH, School of Information and Communication Technology (ICT).
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

A need for high data rates and reliable communication is required as we are moving from 2nd to 3rd and 4th generation of mobile communications. Therefore we see a tremendous rise in data rates. We know that most part of mobile users are indoor as compared to outdoor users, a new challenge for radio planners is to ensure proper coverage to indoor users so the prime focus is to ensure proper coverage and capacity requirements. There are various factors that account for poor coverage hence various techniques have been introduced to create a breakthrough in this process. This thesis basically focuses on indoor coverage for technologies like GSM 900MHz and 1800MHz as well as Tetra380MHz- 385MHz.I have tried different indoor models that could produce a feasible result.

There is a lot of work that have been done in past that focus on outdoor models. Analysis of this thesis reveals that for the typical office environment with moderate amount of obstacle, 380MHz gives the best result as compared to 900MHz and 1800MHz. Observations reveals that 900MHz generates better results as compared to 1800MHz. All PLS coefficients used for 900MHz, 380MHz and 1800MHz are modified ones they are not taken from the standard table. focusing on PLS, Keenan Motley and Free Space models, a general summarization can be drawn that free space model generates least path loss but providing a poor coverage prediction, on the other hand path loss model generate higher loss as compared to free space model but provides good coverage while Keenan Motley model provides good coverage but shows the highest attenuation loss among all the selected models.

Place, publisher, year, edition, pages
2011. , 70 p.
Trita-ICT-EX, 2
URN: urn:nbn:se:kth:diva-36195OAI: diva2:430395
Subject / course
Communications Systems
Educational program
Master of Science - Wireless Systems
Available from: 2011-07-08 Created: 2011-07-08 Last updated: 2011-07-08Bibliographically approved

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