Power Minimization in Multi-tier Networks with Flexible Duplexing
| Title | Power Minimization in Multi-tier Networks with Flexible Duplexing |
| Publication Type | Conference Paper |
| Year of Publication | 2019 |
| Authors | Fanjul, J., and I. Santamaría |
| Conference Name | IEEE Int. Conference on Acoustics, Speech, and Signal Processing (ICASSP) |
| Month Published | May |
| Conference Location | Brighton, UK |
| Abstract | In this paper we present an algorithm to minimize transmit power in multiple-input multiple-output (MIMO) heterogeneous networks (HetNets) with flexible duplexing, a promising strategy that allows the coexistence of uplink and downlink cells within the same time and frequency resource block. First, the proposed algorithm minimizes transmit power for a given uplink/downlink (UL/DL) combination, and afterwards, the optimal solution out of the explored UL/DL combinations is selected. To reduce the computational cost of exploring all the UL/DL settings, we propose a hierarchical switching (HS) approach that considers a reduced subset of transmit directions. By means of Monte Carlo simulations, we show that the proposed technique provides significant power savings with respect to a conventional time-division duplex (TDD) scheme. |
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