| 1. |
- Gunnarsson, Fredrik, et al.
(författare)
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Downtilted Base Station Antennas - A Simulation Model Proposal and Impact on HSPA and LTE Performance
- 2008
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Ingår i: Proceedings of the 68th IEEE Vehicular Technology Conference. - 9781424417223 - 9781424417216 ; , s. 1-5
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Konferensbidrag (refereegranskat)abstract
- This paper proposes a low-complexity model for vertical antenna radiation patterns, e.g. for inclusion in system- level simulations. They can be seen as extensions to the horizontal radiation pattern model used in 3GPP simulation scenarios. The model is verified against and compared to predicted and measured data from real networks. The impact on system-level performance is also investigated. It is seen that using the proposed model, simulated geometry distributions and soft handover statistics closely matching those of real networks may be achieved. The analysis also concludes that many real networks have better cell isolation than what is modeled by the 3GPP antenna model. As a consequence, the horizontal radiation pattern model significantly under-estimates the system level performance in such networks. Furthermore, the proposed model is used to assess the LTE and HSPA system-level performance for realistic scenarios.
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| 2. |
- Lundevall, Kristina, et al.
(författare)
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eStrategy Creation in a Local Swedish Government
- 2012
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Ingår i: European Journal of ePractice. - 1988-625X. ; September 2012:17, s. 5-16
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Tidskriftsartikel (refereegranskat)abstract
- eGovernment continues to be an interesting area of study, especially since it is not simply about the implementation of Information and Communication Technologies (ICTs),but rather, as this paper will show, about a larger change management process. When trying to understand the factors behind successful examples of eGovernment in the context of change management, most research to date focuses on the implementation phase in a literal sense and not on the planning phase preceding the implementation phase, or the evaluation phase following it. This paper aims at remedying this by focusing on the planning phase: the development of an eGovernment strategy and vision, which is the starting point for a future implementation process. Through an in-depth case study of the work done at a local Swedish governmental authority in the city of Vasteras, this paper aims to answer the following question: Which are the key change management aspects of an eGovernment planning process? By focusing on the planning phase of eGovernment in local Swedish government, this paper develops the knowledge and understanding of this kind of endeavour. Even if ICTs can be seen as a means to modernise government, technology alone cannot break down organisational and cultural barriers – something to be realised. The paper is hence primarily empirical in contribution. However, it also provides useful insights on the planning process for eGovernment and necessary aspects when creating an eGovernment strategy
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| 3. |
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| 4. |
- Lundevall, Magnus, et al.
(författare)
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Streaming Applications Over HSDPA in Mixed Service Scenarios
- 2004
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Ingår i: Proceedings of the 60th IEEE Vehicular Technology Conference. - 0780385217 ; , s. 841-845
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Konferensbidrag (refereegranskat)abstract
- High-speed downlink packet access (HSDPA) is included in release 5 of the WCDMA specifications to increase downlink capacity and bitrates. This paper considers performance aspects of streaming applications over HSDPA in a mixed streaming and best-effort service scenario. Different scheduling algorithms are evaluated with the aim of providing sufficient quality-of-service for streaming. The simulation results show that reasonable streaming performance can be achieved without service differentiation if a somewhat fair scheduler is used, and that a streaming-aware scheduler further can protect streaming quality-of-service in high load conditions.
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| 5. |
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