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Channel norm-based ...
Channel norm-based user scheduler in coordinated multi-point systems
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- Han, Shengqian (författare)
- Beihang University, Beijing, China
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- Yang, Chenyang (författare)
- Beihang University, Beijing, China
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- Bengtsson, Mats, 1967- (författare)
- KTH,Signalbehandling,ACCESS Linnaeus Centre
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- Perez-Neira, Ana I. (författare)
- University Polit`ecnica de Catalunya Barcelona, Spain
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
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Ingår i: GLOBECOM - IEEE Global Telecommunications Conference. - 9781424441488
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Nyckelord
- 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
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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