On the modeling of WCDMA system performance with propagation data

 |  Login

Show simple item record

dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Heiska, Kari
dc.date.accessioned 2012-02-13T12:42:55Z
dc.date.available 2012-02-13T12:42:55Z
dc.date.issued 2004-04-23
dc.identifier.isbn 951-22-7087-0
dc.identifier.issn 1456-632X
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/2407
dc.description.abstract The aim of this study was to develop calculation methods for estimating the most important system level performance characteristics of the WCDMA radio network (i.e. network capacity and coverage) in the presence of interference from various sources. The calculation methods described in this work enable the fast design of radio systems with a reasonable degree of accuracy, where different system parameters, propagation conditions and networks as well as frequency scenarios can be easily tested. The work also includes the development and verification of a propagation model for a microcellular environment. Traditionally, system level performance figures have been retrieved using system simulations where the radio network has been modeled as accurately as possible. This has included base stations and mobile stations, propagation models, traffic models and mobility models. Various radio resource management (RRM) algorithms, such as power controls and handovers have also been modeled. However, these system simulations are very complex and time consuming and typically the models are difficult to modify. The idea behind this work is to use the main statistical parameters retrieved from accurate, case specific propagation models and to use these statistics as input for the developed analytical radio network models. When used as output from these analytical models we are able to obtain the performance measures of the network. The specific application area for the developed methods is the evaluation of the effect of the interference from the adjacent frequency channels. Adjacent channel interference decreases the efficiency of the usage of the electromagnetic spectrum i.e. the spectral efficiency. The aim of a radio system design is to ensure that the reduction in the spectral efficiency is as low as possible. This interference may originate from the same or a different radio system and from the same or another operator's network. The strength of this interference is dependent on the system parameters and the network layout. The standard questions regarding adjacent system interference between different operators' network are what guard band is needed between the radio carriers in order to maintain the quality of the network or what are the main mobile and network parameters, such as adjacent channel emission levels or adjacent channel selectivity, required in order to achieve satisfactory network performance. With the developed method proposed here it is possible to answer these questions with reasonable accuracy. One important aspect of network performance is the radio wave propagation environment for which the radio systems are designed. This thesis presents methods evaluating radio wave propagation, especially for cases where the base station antenna is below the rooftops, i.e. in the case of microcellular network environments. The developed microcellular propagation model has been developed for network planning purposes and it has been verified using numerous field propagation measurements. The model can be used in cases where the mobile station is located either indoors or outdoors. en
dc.format.extent 43, [116]
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartofseries Electromagnetics Laboratory report series en
dc.relation.ispartofseries 430 en
dc.relation.haspart Heiska K., Posti H., Muszynski P., Aikio P., Numminen J. and Hämäläinen M., 2002. Capacity reduction of WCDMA downlink in the presence of interference from adjacent narrow-band system. IEEE Transactions on Vehicular Technology 51, number 1, pages 37-51.
dc.relation.haspart Heiska K., Posti H., Muszynski P., Rautiainen T. and Numminen J., 2002. WCDMA downlink coverage reduction due to adjacent channel interference. Wireless Personal Communications 23, number 2, pages 217-242.
dc.relation.haspart Heiska K., 2003. Effect of adjacent IS-95 network to WCDMA uplink capacity. IEEE Transactions on Vehicular Technology 52, number 2, pages 326-332.
dc.relation.haspart Heiska K., Rikkinen K., Muszynski P. and Schwarz U., 2003. Modeling of UE-UE interference at 2.5 GHz WCDMA. In: Proceedings of the 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'03). Beijing, China, 7-10 September 2003, volume 1, pages 69-73.
dc.relation.haspart Heiska K. and Holma H., 1998. Performance of 2 Mbit/s packet data with WCDMA in small microcellular environment. In: Proceedings of the First International Symposium on Wireless Personal Multimedia Communications (WPMC'98). Yokosuka, Japan, 4-6 November 1998, pages 64-69.
dc.relation.haspart Heiska K. and Kangas A., 1996. Microcell propagation model for network planning. In: Proceedings of the 7th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'96). Taipei, Taiwan, 15-18 October 1996, volume 1, pages 148-152.
dc.relation.haspart Rajala J., Sipilä K. and Heiska K., 1999. Predicting in-building coverage for microcells and small macrocells. In: Proceedings of the 49th IEEE Vehicular Technology Conference (VTC'99). Houston, Texas, USA, 16-20 May 1999, volume 1, pages 180-184.
dc.relation.haspart Heiska K., 2002. Interference between GSM/EDGE and other cellular radio technologies. In: Halonen T., Romero J. and Melero J. (editors), GSM, GPRS and EDGE Performance: Evolution Towards 3G/UMTS. John Wiley & Sons, Ltd., Appendix D, pages 587-597.
dc.relation.haspart Heiska K., 2002. Narrowband and WCDMA system operation in adjacent frequency bands. In: Laiho J., Wacker A. and Novosad T. (editors), Radio Network Planning and Optimisation for UMTS. John Wiley & Sons, Ltd., Section 5.4, pages 232-258.
dc.subject.other Electrical engineering en
dc.title On the modeling of WCDMA system performance with propagation data en
dc.type G5 Artikkeliväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Electrical and Communications Engineering en
dc.contributor.department Sähkö- ja tietoliikennetekniikan osasto fi
dc.subject.keyword radio wave propagation en
dc.subject.keyword WCDMA en
dc.subject.keyword capacity en
dc.subject.keyword coverage en
dc.subject.keyword adjacent channel interference en
dc.identifier.urn urn:nbn:fi:tkk-003521
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.lab Electromagnetics Laboratory en
dc.contributor.lab Elektromagnetiikan laboratorio fi


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search archive


Advanced Search

article-iconSubmit a publication

Browse

My Account