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The massively dense distributed antenna system (md-DAS) with virtual cells (VCs) has drawn increasing interests recently. In this paper, we develop an energy-efficiency-oriented coordinated power allocation (PA) scheme considering the inter-VC interference in a downlink md-DAS. The problem can be formulated as a complicated non-convex fractional programming problem. To make it tractable, we recast...
In this letter, we address the problem of energy efficient coordinated power allocation in a multicell distributed antenna system (DAS). Due to the mutual coupling of multiple cells caused by intercell interference (ICI), the problem is nonconvex and, therefore, is difficult to solve. We assume that only the large-scale channel state information at the transmitter (CSIT) is known to reduce the system...
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