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Power Allocation fo...
Power Allocation for Two-Cell Two-User Joint Transmission
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- Li, Jingya, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Eriksson, Thomas, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Svensson, Tommy, 1970 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Botella Mascarell, Carmen, 1979 (author)
- Universitat de Valencia
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(creator_code:org_t)
- 2012
- 2012
- English.
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In: IEEE Communications Letters. - 1558-2558 .- 1089-7798. ; 16:19, s. 1474-1477
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Abstract
Subject headings
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- In this paper, we develop a power allocation scheme for the downlink of a two-cell two-user joint transmission system. The objective is to maximize the sum rate under per-cell power constraints. We study a worst case scenario where the carrier phases between the two base stations are un-synchronized, so that joint transmission must be performed without precoding. The derived power allocation scheme is remarkably simple, i.e., each cell transmits with full power to only one user. Note that joint transmission is still possible, when two cells select the same user for data transmission. Moreover, we prove that, in this scenario, the joint transmission case happens with higher probability when the maximum transmit power is high, or the two users are in the overlapped cell-edge area.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Keyword
- imperfect synchronization
- Power allocation
- joint transmission
- coordinated multi-point (CoMP)
Publication and Content Type
- art (subject category)
- ref (subject category)
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