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On the Impact of Uplink Scheduling on Intercell Interference Variation in MIMO OFDM Systems
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
Ericsson Research.
Ericsson Research.
Ericsson Research.
2009 (English)In: 2009 IEEE Wireless Communications and Networking Conference, 2009Conference paper, Published paper (Refereed)
Abstract [en]

Recently, several works have pointed out the negative impact of intercell interference variation on the performance of link adaptation in multi-cell single input single output (SISO) systems. However, the performance of adaptive precoder selection in multiple input multiple output (MIMO) cellular networks in the presence of interference variation is much less understood. In this paper we develop a simulation model for MIMO orthogonal frequency division multiple access (OFDMA) networks that allows us to study the impact of popular scheduling and power control algorithms on the time variation of the uplink interference power. We find that employing a time persistent proportional fair scheduler (which we term proportional fair in frequency, PFF, scheduler) together with an open loop power control scheme significantly reduces intercell interference variation and thereby it provides higher throughput than traditional schedulers that are primarily optimized for a single cell setting without taking into account the variation of the intercell interference power.

Place, publisher, year, edition, pages
2009.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-45664DOI: 10.1109/WCNC.2009.4917858Scopus ID: 2-s2.0-70349179539OAI: oai:DiVA.org:kth-45664DiVA: diva2:452796
Conference
2009 IEEE Wireless Communications and Networking Conference, WCNC 2009. Budapest. 5 April 2009 - 8 April 2009
Note
QC 20111115Available from: 2011-10-31 Created: 2011-10-31 Last updated: 2011-11-15Bibliographically approved

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