Energy-Efficient 5G Outdoor-to-Indoor Communication: SUDAS Over Licensed and Unlicensed Spectrum
Derrick Wing Kwan Ng, Marco Breiling, Christian Rohde, Frank, Burkhardt, and Robert Schober

TL;DR
This paper introduces a resource allocation algorithm for 5G outdoor-to-indoor communication using SUDAS, which leverages licensed and unlicensed spectrum to enhance energy and spectral efficiency for single-antenna UEs.
Contribution
It proposes a novel joint resource allocation method for SUDAS that maximizes energy efficiency by combining licensed and unlicensed bands, with tractable optimization solutions.
Findings
Significant energy efficiency gains over baseline systems.
Effective utilization of licensed and unlicensed spectrum for parallel data streams.
Optimal precoding and post-processing matrices diagonalize the channel.
Abstract
In this paper, we study the joint resource allocation algorithm design for downlink and uplink multicarrier transmission assisted by a shared user equipment (UE)-side distributed antenna system (SUDAS). The proposed SUDAS simultaneously utilizes licensed frequency bands and unlicensed frequency bands, (e.g. millimeter wave bands), to enable a spatial multiplexing gain for single-antenna UEs to improve energy efficiency and system throughput of -th generation (5G) outdoor-to-indoor communication. The design of the UE selection, the time allocation to uplink and downlink, and the transceiver processing matrix is formulated as a non-convex optimization problem for the maximization of the end-to-end system energy efficiency (bits/Joule). The proposed problem formulation takes into account minimum data rate requirements for delay sensitive UEs and the circuit power consumption of all…
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Taxonomy
TopicsAdvanced MIMO Systems Optimization · Cooperative Communication and Network Coding · Millimeter-Wave Propagation and Modeling
