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- Acx, A. G., et al.
(författare)
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Radio Resource Management
- 2000
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Ingår i: Third generation mobile communication systems. - Boston, Mass : Artech House. - 1580530826 ; , s. 386-
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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- Denrell, J., et al.
(författare)
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Managing knowledge in the dark : An empirical study of the reliability of capability evaluations
- 2004
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Ingår i: Management science. - : Institute for Operations Research and the Management Sciences (INFORMS). - 0025-1909 .- 1526-5501. ; 50:11, s. 1491-1503
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Tidskriftsartikel (refereegranskat)abstract
- If knowledge is to be managed and transferred, it is essential that members of organizations know and agree on where capabilities reside. Few studies, however, have examined the difficulties of evaluating capabilities in large firms. This paper reports an in-depth empirical study of capabilities central to knowledge management efforts in large leading multinational companies. The results show that evaluation of these capabilities is a complex task. The median interrater correlation for capabilities designated as strategic by top management is only 0.28. Analysis of the determinants of reliability show that the difference in evaluations is largest for subsidiaries managers know less about, for younger subsidiaries, and for subsidiaries in less important markets. The results of our empirical study have important implications for creating, retaining, and transferring knowledge in organizations.
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| 8. |
- Janssen, G. J. M., et al.
(författare)
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Capacity assessment of a cellular radio system using a narrowband multiuser detector
- 2003
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Ingår i: IEEE Transactions on Wireless Communications. - : Institute of Electrical and Electronics Engineers (IEEE). - 1536-1276 .- 1558-2248. ; 2:4, s. 703-713
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Tidskriftsartikel (refereegranskat)abstract
- With a narrowband multiuser detector (MUD), multiple users can simultaneously share the same channel without using a bandwidth-expanding signature code when sufficient power differences at the receiver are maintained. In this paper, we assess the capacity gain that can be achieved in a hypothetical cellular system with centralized power control, using a narrowband MUD based on successive cancellation. The power-control algorithm is adapted to multiple users per channel in a cell. Simulation results are presented for two heuristic carrier-to-interference ratio-based channel-assignment schemes. The MUD allows for a substantial capacity gain due to a tighter packing of users in a channel. The observed gain compared with a conventional single user-per-channel system, ranges from 1.4 to 5 for cluster sizes C = 1 and 7, respectively.
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| 9. |
- Janssen, Gerard J. M., et al.
(författare)
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Capacity of a Cellular Radio System Using a Narrowband Multiuser Detector
- 2002
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Konferensbidrag (refereegranskat)abstract
- With a narrowband multiuser detector (MUD), multiple users can simultaneously share the same chan- nel without using a bandwidth expanding signature code when suficient power differences at the receiver are main- tained. In this paper we assess the capacity gain that can be achieved in a hypothetical cellular system with centralized power control, using a narrowband MUD based on succes- sive cancellation. The power control algorithm is adapted to multiple users per channel in a cell. Simulation results are presented for two heuristic CIR based channel assign- ment schemes. The MUD allows for a substantial capacity gain due to a tighter packing of users in a channel. The observed gain compared to a conventional single user per channel system, ranges from 1.4 to 5 for cluster sizes C = 1 and 7, respectively.
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| 10. |
- Janssen, Gerard J. M., et al.
(författare)
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Power Control and Stepwise Removal Algorithms for a Narrowband Multiuser Detector in a Cellular System
- 2002
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Ingår i: 2002 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5, CONFERENCE PROCEEDINGS. - New York : IEEE. - 0780374002 ; , s. 345-350
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Konferensbidrag (refereegranskat)abstract
- With a narrowband multiuser detector (MUD), multiple users can simultaneously share the same channel without using a bandwidth expanding signature code when sufficient power differences at the receiver are maintained. In this paper, we estimate the capacity that can be achieved in a hypothetical cellular system with centralized power control, using a narrowband MUD based on successive cancellation. The power control algorithm is adapted to multiple users per channel in a cell.Capacity results from simulations based on user removal are presented for three removal algorithms. It is shown that the narrowband MUD has a significant potential for capacity gain due to a tighter packing of users in a channel.
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