Coordinated Power Allocation for Generalized Multi-Cluster Distributed Antenna Systems

Wei FENG  Yanmin WANG  Yunzhou LI  Xibin XU  Jing WANG  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.9   pp.2656-2659
Publication Date: 2011/09/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.2656
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
distributed antenna system (DAS),  coordinated power allocation (PA),  upper bound (UB),  Geometric Programming (GP),  

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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.