Title :
WCDMA downlink coverage: interference margin for users located at the cell coverage border
Author :
Hiltunen, Kimmo ; Binucci, Nicola
Author_Institution :
Telecom R.&D, Oy LM Ericsson Ab, Jorvas, Finland
fDate :
6/24/1905 12:00:00 AM
Abstract :
The scope of this paper is to derive a simple equation for the WCDMA downlink interference margin as a function of the relative downlink load. This interference margin can then be used as an input for a typical link budget. Due to the complexity of the WCDMA downlink, a fully analytical approach would probably result in a rather complicated and/or inaccurate approximation. Therefore, in this paper the actual equation for the interference margin is derived from the WCDMA theory, and the missing parameter values are obtained from a number of system simulations. The downside of this approach is that a fully flexible usage of the approximated interference margin requires input from a number of measurements or system simulations with different initial assumptions.
Keywords :
approximation theory; broadband networks; cellular radio; code division multiple access; data communication; multiuser channels; radio links; radio networks; radiofrequency interference; voice communication; WCDMA downlink coverage; approximated interference margin; cell coverage border; circuit switched data service; downlink load; link budget; speech services; system simulation; Attenuation; Base stations; Diversity methods; Downlink; Equations; Interference; Loaded antennas; Multiaccess communication; Propagation losses; Telecommunications;
Conference_Titel :
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th
Print_ISBN :
0-7803-7484-3
DOI :
10.1109/VTC.2002.1002708