Channel norm-based user scheduler in coordinated multi-point systems

QC 20110705 QC 20111107
In this paper, we address the problem of user scheduling in downlink coordinated multi-point transmission (CoMP) systems, where multiple users are selected and then served with zero forcing beamformer simultaneously by several cooperative base stations (BSs). To reduce the enormous overhead led by obtaining full channel state information at the transmitter, a low-feedback user scheduling method called channel norm-based user scheduler (NUS), is proposed by exploiting the asymmetric channel feature of CoMP systems. Simulation results show that the channel norm provides sufficient information for user scheduling when each BS has one antenna, where the performance gap between the NUS and the greedy user selection (GUS) is negligible with respect to both the cell average throughput and the cell edge throughput. When each BS has multiple antennas, NUS is inferior to GUS, but still significantly outperforms the uncoordinated systems.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Telekommunikation hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Telecommunications hsv//eng
Asymmetric channel
Beam formers
Cell averages
Cell edges
Channel state information at the transmitters
Multiple antenna
Multiple user
Simulation result
User scheduling
User selection
Zero-forcing
Antennas
Bioinformatics
Feedback
State feedback
Scheduling
Telecommunication
Telekommunikation

Yang, ChenyangBeihang University, Beijing, China (författare)
Bengtsson, Mats,1967-KTH,Signalbehandling,ACCESS Linnaeus Centre(Swepub:kth)u1xsra3p (författare)
Perez-Neira, Ana I.University Polit`ecnica de Catalunya Barcelona, Spain (författare)
Beihang University, Beijing, ChinaSignalbehandling (creator_code:org_t)

Av författaren/redakt...: Han, Shengqian; Yang, Chenyang; Bengtsson, Mats, ...; Perez-Neira, Ana ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Elektroteknik oc ...; och Telekommunikatio ...

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