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Non-Orthogonal Multiple Access (NOMA) for cellular future radio access
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Considering the trend in 5G, achieving significant gains in capacity and system throughput performance is a high priority requirement in view of the recent exponential increase in the volume of mobile traffic and the proposed system should be able to support enhanced delay-sensitive high-volume services.Abstract:
Radio access technologies for cellular mobile communications are typically characterized by multiple access schemes, e.g., frequency division multiple access (FDMA), time division multiple access (TDMA), code division multiple access (CDMA), and OFDMA. In the 4th generation (4G) mobile communication systems such as Long-Term Evolution (LTE) (Au et al., Uplink contention based SCMA for 5G radio access. Globecom Workshops (GC Wkshps), 2014. doi:10.1109/GLOCOMW.2014.7063547) and LTE-Advanced (Baracca et al., IEEE Trans. Commun., 2011. doi:10.1109/TCOMM.2011.121410.090252; Barry et al., Digital Communication, Kluwer, Dordrecht, 2004), standardized by the 3rd Generation Partnership Project (3GPP), orthogonal multiple access based on OFDMA or single carrier (SC)-FDMA is adopted. Orthogonal multiple access was a reasonable choice for achieving good system-level throughput performance with simple single-user detection. However, considering the trend in 5G, achieving significant gains in capacity and system throughput performance is a high priority requirement in view of the recent exponential increase in the volume of mobile traffic. In addition the proposed system should be able to support enhanced delay-sensitive high-volume services such as video streaming and cloud computing. Another high-level target of 5G is reduced cost, higher energy efficiency and robustness against emergencies.read more
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A Survey of In-Band Full-Duplex Transmission: From the Perspective of PHY and MAC Layers
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A General MIMO Framework for NOMA Downlink and Uplink Transmission Based on Signal Alignment
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Optimal Joint Power and Subcarrier Allocation for Full-Duplex Multicarrier Non-Orthogonal Multiple Access Systems
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References
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Journal ArticleDOI
Rateless Coded Multiplexing for Downlink Transmission With Two Users: Performance Analysis and System Design
TL;DR: In various user pair scenarios, it is shown that the proposed scheme not only enhances the user transmission rate but also reduces the overhead required for reliable transmissions when compared to PD-NOMA-based schemes.
Proceedings ArticleDOI
Bandwidth Minimization under Probabilistic Constraints and Statistical CSI for NOMA
TL;DR: The problem of minimizing the number of consumed resource elements (REs) while satisfying the outage constraints is solved and the Gaussian Approximation of NOMA user rates and an offline empirical approach based on tail distributions outperform the orthogonal multiple access techniques.
Proceedings ArticleDOI
Improving Physical Layer Security of NOMA Networks by Using Opportunistic Scheduling
TL;DR: Numerical results show that the BSNBSF scheme significantly improves the secrecy outage performance NOMA networks compared to that of the random near user and random far user selection scheme.
Proceedings ArticleDOI
Optimization of Power Allocation for Multi-User Superposition Transmission Systems
TL;DR: Simulation results indicate that the proposed methods achieve the sum rate intensely close to the optimum via exhaustive search, while with a much lower computational complexity.
Proceedings ArticleDOI
Optimal Power Allocation for Minimizing the Energy Consumption of a NOMA Base Station with Cell DTx
TL;DR: This paper considers a base station that jointly employs Non-Orthogonal Multiple Access and Cell Discontinuous Transmission in order to reduce its power consumption and it is shown that this problem is convex and can be solved using only single variable root finding algorithms.