Coordinated Power Allocation for Generalized Multi-Cluster Distributed Antenna Systems

Wei FENG; Yanmin WANG; Yunzhou LI; Xibin XU; Jing WANG

doi:10.1587/transcom.E94.B.2656

Regular Section

Coordinated Power Allocation for Generalized Multi-Cluster Distributed Antenna Systems

Wei FENG, Yanmin WANG, Yunzhou LI, Xibin XU, Jing WANG

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Keywords: distributed antenna system (DAS), coordinated power allocation (PA), upper bound (UB), Geometric Programming (GP)

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2011 Volume E94.B Issue 9 Pages 2656-2659

DOI https://doi.org/10.1587/transcom.E94.B.2656

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Abstract

In this letter, coordinated power allocation (PA) is investigated for the downlink of a generalized multi-cluster distributed antenna system (DAS). Motivated by practical applications, we assume only the global large-scale channel state information is known at the transmitter. First, an upper bound (UB) for the ergodic sum capacity of the system is derived and used as a simplified optimization target. Then, a coordinated PA scheme is proposed based on Geometric Programming (GP), which is demonstrated to be nearly optimal by Monte Carlo simulations.

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