Academic theses (1)
J. Kurjenniemi, “Tehonsäätö UTRA TDD-järjestelmässä”, M.Sc. thesis, University of Jyväskylä, 2001.
Conference articles (3)
J. Kurjenniemi, S. Hämäläinen, T. Ristaniemi, O. Lehtinen and P. Patronen, “Convergence of UTRA TDD uplink power control“, Proc. of the IEEE Vehicular Technology Conference, Rhodes, Greece, May 6-9, 2001.
In this article convergence of UTRA TDD uplink dedicated physical channel (DPCH) power control is studied.
Current uplink power control is based on several measurements, which involve both random and systematic errors. Outer loop power control is used to compensate the systematic error.
Since the amount of systematic error is unknown in the beginning of a call and after each handover, the outer loop power control should adapt to the current conditions as fast as possible.
In this paper the effect of the convergence speed of the outer loop power control to the UTRA TDD system performance is analyzed by the means of dynamic system level simulator.
J. Kurjenniemi, S. Hämäläinen and T. Ristaniemi, “Uplink Power Control in UTRA TDD“, Proc. of the IEEE International Conference on Communications, Helsinki, Finland, June 11-14, 2001.
This paper discusses uplink power control in UTRA TDD, that is, the TDD (time division duplex) mode of the third generation mobile radio system UTRA (UMTS Terrestrial Radio Access), and presents system simulations made for it.
The current UTRA TDD uplink power control contains several measurements that involve A considerably amount of error. Also THE power set by power control may involve error.
In this paper the effect of power control error on the performance of the UTRA TDD network is studied by the means of a system level simulator.
J. Kurjenniemi, S. Hämäläinen and T. Ristaniemi, “UTRA TDD Handover Performance“, Proc. of the IEEE GLOBECOM, San Antonio, Texas, USA, November 25-29, 2001.
In this paper handover in UTRA TDD is discussed. A simple WCDMA handover, tailored to a TDD operation, is considered.
This gives rise to careful setting of different handover parameters, and the evaluation of the effects on the system performance is worth an extensive study.
A dynamic system level simulator, where all the relevant radio resource management procedures are modeled, is used for this purpose.
