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Power allocation for two-cell two-user joint transmission
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Power allocation for two-cell two-user joint transmission
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| Li, Jingya; Eriksson, Thomas; Svensson, Tommy; Botella Mascarell, Carmen Perfil | |||
| This document is a artículoDate2012 | |||
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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. | |||
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Li, Jingya Eriksson, Thomas Svensson, Tommy Botella Mascarell, Carmen 2012 Power allocation for two-cell two-user joint transmission IEEE Communications Letters 16 9 1474 1477 |
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| https://doi.org/10.1109/LCOMM.2012.072012.121096 |