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Exploiting long-ter...
Exploiting long-term statistics in spatially correlated multi-user MIMO systems with quantized channel norm feedback
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- Björnson, Emil, 1983- (författare)
- KTH,Signalbehandling,ACCESS Linnaeus Centre
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- Ottersten, Björn, 1961- (författare)
- KTH,Signalbehandling,ACCESS Linnaeus Centre
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(creator_code:org_t)
- IEEE, 2008
- 2008
- Engelska.
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Ingår i: 2008 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING. - : IEEE. - 9781424414833 ; , s. 3117-3120
- Relaterad länk:
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http://ieeexplore.ie...
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https://kth.diva-por... (primary) (Raw object)
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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 wireless multiple antenna and multi-user systems, the spatial dimensions may be exploited to increase the performance by means of antenna gain, spatial diversity, and multi-user diversity. A limiting factor in such systems is the channel information required by the transmitter to control the intra-cell interference. Herein, the properties of spatially correlated channels with long-term statistical information at the transmitter and fixed-rate feedback of the quantized Euclidean channel norm are analyzed using a spectral subspace decomposition framework. A spatial division multiple access scheme is proposed with interference suppression at the receiver and joint scheduling and zero-forcing beamforming at the transmitter. Closed-form expressions for first and second order moments of the feedback conditional channel statistics are derived. It is shown that only a few bits of feedback are required to achieve reliable rate estimation and weighted sum-rate maximization.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- array signal processing
- feedback
- MIMO systems
- mobile communication
- spatial division multiple access
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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