A Study of Multiband Indoor Radio Distribution System

• Main Author: Shakya, Bikash
• Format: Others
• Language: English
• Published: KTH, Skolan för informations- och kommunikationsteknik (ICT) 2015
• Subjects: Computer and Information Sciences; Data- och informationsvetenskap
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174864

The mobile indoor traffic are increasing exponentially which is the current challenge inindoor coverage and design for most of the researchers and business companies todevelop further. There are different trade-off to provide different indoor services withthe use of different repeater system, distributed antenna network (active and passive),macro cells indoor penetrations and many more. As the use of energy effective materialsfor construction of buildings have made a blockage of RF signals from macro cells,usually a separate installations are done to provide indoor coverage for differentservices such as TRTRA, GSM, UNTS, LTE and WLAN in indoor environments forlarge campuses, industrial complex, sports arena, tunnels and office buildings. Thisseparate installations increases the cost, installation space and time which can be solvedusing the same infrastructure to provide multiple of mobile indoor solutions using smartintegrated solutions where many mobile services can be distributed indoor using thesame distributed antenna network using active and passive networks.This thesis investigates the advantage and disadvantage of different types of active andpassive distributed antenna system with the integrated antenna network to compare thecoverage and cost analysis. The coverage analysis was done to compare the RSSI levelby adding different frequency bands into the indoor network for both active and passiveDAS design. Different types of sample design model was used to verify the coverageanalysis. It can be seen from the coverage analysis that an integrated system with all inone solution also has a better coverage compared to typical active and passive designwhich can be used in future in building design as One Net Solution. Also the costanalysis was done for both CAPEX and OPEX to find the cost estimation for differentindoor models. It showed that the integrated solution is the most expensive solution butif it has a case of large design venues, then integrate active solution can be the onlysolutions. Passive design cannot cover large scale areas. It is suitable only for small andmedium sized venues.