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Backscatter Cooperation in NOMA Communications Systems
In this paper, a backscatter cooperation (BC) scheme is proposed for non...
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A Unified Framework for Non-Orthogonal Multiple Access
This paper proposes a unified framework of non-orthogonal multiple acces...
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Performance Enhancement of Hybrid SWIPT Protocol for Cooperative NOMA Downlink Transmission
Time splitting and power splitting incorporating, a hybrid Simultaneous ...
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Harvesting Devices' Heterogeneous Energy Profiles and QoS Requirements in IoT: WPT-NOMA vs BAC-NOMA
The next generation Internet of Things (IoT) exhibits a unique feature t...
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Advanced NOMA Assisted Semi-Grant-Free Transmission Schemes for Randomly Distributed Users
Non-orthogonal multiple access (NOMA) assisted semi-grant-free (SGF) tra...
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Anywhere Decoding: Low-Overhead Uplink Interference Management for Wireless Networks
Inter-cell interference (ICI) is one of the major performance-limiting f...
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Non-orthogonal Multiple Access Assisted Multi-Region Geocast
This work proposes a novel location-based multi-group multicast framewor...
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Impartial SWIPT-Assisted User Cooperation Schemes
In this paper, we propose an impartial simultaneous wireless information and power transfer (SWIPT)-assisted cooperation mechanism for a non-orthogonal multiple access (NOMA) downlink scenario. Specifically, both a cell-center user and a cell-edge user apply the power-splitting technique and utilize the harvested energy to forward the other user's information on the premise of successful decoding of their own information. Both analytical and numerical results show that the proposed impartial user cooperation mechanism (IUCM) outperforms the traditional partial cooperation mechanism in terms of outage probability, diversity order and diversity-multiplexing trade-off (DMT). For comparison, we further incorporate the IUCM into an orthogonal frequency-division multiple access (OFDMA) framework, which is shown to preserve the same diversity order, while has a worse but more flexible DMT performance in comparison with the IUCM in the NOMA framework. Although the IUCM in OFDMA has a worse outage performance, it is proved that it has the same optimal system outage probability with the IUCM in NOMA when the relaying channel between the two users is error-free.
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