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Akademický článek
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Publikováno v:
IEEE Personal Communications. 5:16-24
This article presents the FRAMES multiple access (FMA) concept designed for third-generation mobile radio systems. The concept consists of two modes, TDMA-based FMA1 and CDMA-based FMA2, which have contributed to the standardization processes of thir
Autor:
E. Nikula, R. Himanen
Publikováno v:
IFAC Proceedings Volumes. 27:213-217
Probabilistic fire safety assessment (Fire PSA) of the Finnish nuclear power plant TVO I/II has been extended to include the detailed investigation about the fire risks induced by the unwanted function of the reactor protection system (RPS). This pap
Publikováno v:
Lakartidningen. 104(40)
Publikováno v:
WCNC
One step in the evolution of the real-time GSM services is the enhanced circuit switched data (ECSD) which is being developed in ETSI as a GSM Phase 2+ work item (EDGE Phase 1) parallel to the Enhanced General Packet Radio Service (EGPRS). The ECSD r
Autor:
E. Malkamaki, E. Nikula
Publikováno v:
Proceedings of ICUPC - 5th International Conference on Universal Personal Communications.
The feasibility of four TDMA based radio interfaces for UMTS to provide up to a 2 Mbit/s service is studied. GSM compatible multicarrier and single carrier solutions with binary and multilevel offset QAM modulation are shown to be feasible for micro-
Autor:
M. Doetsch, E. Nikula
Publikováno v:
VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151).
The wideband TDMA radio interface is described and its performance is shown for different services in typical mobile radio environments. The cornerstones of the wideband TDMA concept are the interference averaging radio resource management and effici
Publikováno v:
PIMRC
Universal Mobile Telecommunications System (UMTS) has a target maximum user bit rate of 2 Mbit/s. We present a performance comparison between four TDMA schemes and one CDMA scheme that all can provide the required user data rate. Evaluation considers
Publikováno v:
VTC Fall
The 3GPP Release 5 will specify a GSM/EDGE Radio Access Network (GERAN) which can connect to 3G mobile core network (CN) through the Iu interface. The new architecture implies significant modifications to the GERAN radio protocols. This paper focuses