Channel Norm-Based Power Control in Downlink Multi-User Distributed MIMO Systems

초록

We consider distributed multiple-input multiple-output systems with remote antennas (RA) connected to the base station via high-capacity backhaul, which are operated under the per-antenna power constraint (PAPC). We propose a simple strategy to determine the transmission power for each user, referred to as channel norm-based power control (NBPC) to obtain near-optimal performance in terms of the sum-rate and the log-sum-rate. In particular, a closed-form solution to maximize the sum-rate using the NBPC is presented. We also show that the proposed strategy can be efficiently utilized in conjunction with existing multi-user transmission schemes.

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