116 research outputs found
User Association in 5G Networks: A Survey and an Outlook
26 pages; accepted to appear in IEEE Communications Surveys and Tutorial
Resource Allocation in Heterogenous Full-duplex OFDMA Networks: Design and Analysis
Recent studies indicate the feasibility of full-duplex (FD) bidirectional wireless communications. Due to its potential to increase the capacity, analyzing the performance of a cellular network that contains full-duplex devices is crucial. In this paper, we consider maximizing the weighted sum-rate of downlink and uplink of an FD heterogeneous OFDMA network where each cell consists of an imperfect FD base-station (BS) and a mixture of half-duplex and imperfect full-duplex mobile users. To this end, first, the joint problem of sub-channel assignment and power allocation for a single cell network is investigated. Then, the proposed algorithms are extended for solving the optimization problem for an FD heterogeneous network in which intra-cell and inter-cell interferences are taken into account. Simulation results demonstrate that in a single cell network, when all the users and the BSs are perfect FD nodes, the network throughput could be doubled. Otherwise, the performance improvement is limited by the inter-cell interference, inter-node interference, and self-interference. We also investigate the effect of the percentage of FD users on the network performance in both indoor and outdoor scenarios, and analyze the effect of the self-interference cancellation capability of the FD nodes on the network performance
Resource Allocation in Heterogenous Full-duplex OFDMA Networks: Design and Analysis
Recent studies indicate the feasibility of full-duplex (FD) bidirectional
wireless communications. Due to its potential to increase the capacity,
analyzing the performance of a cellular network that contains full-duplex
devices is crucial. In this paper, we consider maximizing the weighted sum-rate
of downlink and uplink of an FD heterogeneous OFDMA network where each cell
consists of an imperfect FD base-station (BS) and a mixture of half-duplex and
imperfect full-duplex mobile users. To this end, first, the joint problem of
sub-channel assignment and power allocation for a single cell network is
investigated. Then, the proposed algorithms are extended for solving the
optimization problem for an FD heterogeneous network in which intra-cell and
inter-cell interferences are taken into account. Simulation results demonstrate
that in a single cell network, when all the users and the BSs are perfect FD
nodes, the network throughput could be doubled. Otherwise, the performance
improvement is limited by the inter-cell interference, inter-node interference,
and self-interference. We also investigate the effect of the percentage of FD
users on the network performance in both indoor and outdoor scenarios, and
analyze the effect of the self-interference cancellation capability of the FD
nodes on the network performance.Comment: arXiv admin note: text overlap with arXiv:1605.0194
Spectrum sharing and aggregation for future wireless networks, part II
The papers in this special issue represent the second one in the sequel of three special issues on spectrum sharing and aggregation for future wirelessn networks
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