DocumentCode :
2625737
Title :
LTE uplink power control and base station antenna down tilt in a 3D channel model
Author :
Lu, Xiaojia ; Kunnari, Esa ; Leinonen, Jouko ; Piirainen, Olli ; Vainikka, Markku ; Juntti, Markku
Author_Institution :
Centre for Wireless Commun., Univ. of Oulu, Oulu, Finland
fYear :
2010
fDate :
12-15 April 2010
Firstpage :
377
Lastpage :
381
Abstract :
This paper examines the impact of the uplink power control and base station (BS) antenna down tilt on the system level performance in a realistic multicell three dimensional channel model. The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) adopts single carrier frequency division multiple access (SC-FDMA) as an air interface. The intra-cell interference is thus avoided but the inter-cell interference is still an issue. The system level performance depends not only on the transmitted power but also on the inter-cell interference level. Uplink power control scheme is used to limit the mobile station (MS) transmit power in order to reduce the interference. To evaluate the system performance, a realistic propagation environment is essential. We extend the IST WINNER II channel model (WIM II) in the elevation domain and include the elevation beam pattern. We show mathematical expressions of link loss related to the BS-MS distance, down tilt angle, link loss, beam gain, and the effect of MS open-loop-controlled power. Based on the 3D channel model, the impact of BS antenna down tilt angle effect along with open loop power control scheme is studied.
Keywords :
3G mobile communication; frequency division multiple access; mobile antennas; open loop systems; power control; telecommunication control; 3D channel model; 3rd generation partnership project; LTE uplink power control; SC-FDMA; base station antenna; long term evolution; mobile station; open-loop-controlled power; single carrier frequency division multiple access; Antenna arrays; Base stations; Brain modeling; Frequency conversion; Interference; Long Term Evolution; Power control; Power system modeling; Scheduling; System performance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Conference (EW), 2010 European
Conference_Location :
Lucca
Print_ISBN :
978-1-4244-5999-5
Type :
conf
DOI :
10.1109/EW.2010.5483447
Filename :
5483447
Link To Document :
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