Non-orthogonal multiple access and beamforming for relay network with RF energy harvesting
Sign Up to like & getrecommendations! Published in 2020 at "ICT Express"
DOI: 10.1016/j.icte.2019.05.004
Abstract: Abstract Downlink multi-user non-orthogonal multiple access (NOMA) relay systems, that are wirelessly powered by harvesting energy from radio frequency, are taken into consideration. To enhance the performance of the NOMA multiuser systems, the base station… read more here.
Keywords: multiple access; non orthogonal; relay; orthogonal multiple ... See more keywords
Implementation of network-coding approach for improving the BER performance in non-orthogonal multiple access (NOMA)-PON
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DOI: 10.1016/j.optcom.2020.125301
Abstract: Abstract In the current passive optical networks (PONs), we address the challenge of dealing with asymmetric channel conditions and asymmetric data rates in order to meet the traffic demand of optical network unit (ONU) to… read more here.
Keywords: network coding; non orthogonal; approach; orthogonal multiple ... See more keywords
Non-Orthogonal Multiple Access (NOMA) for Downlink Multiuser MIMO Systems: User Clustering, Beamforming, and Power Allocation
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Access"
DOI: 10.1109/access.2016.2646183
Abstract: We investigate the application of non-orthogonal multiple access (NOMA) with successive interference cancellation (SIC) in downlink multiuser multiple-input multiple-output (MIMO) cellular systems, where the total number of receive antennas at user equipment (UE) ends in… read more here.
Keywords: receive antennas; mimo; power; multiple access ... See more keywords
A Comparison Between Orthogonal and Non-Orthogonal Multiple Access in Cooperative Relaying Power Line Communication Systems
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Access"
DOI: 10.1109/access.2017.2710280
Abstract: Most, if not all, existing studies on power line communication (PLC) systems as well as industrial PLC standards are based on orthogonal multiple access schemes, such as orthogonal frequency-division multiplexing and code-division multiple access. In… read more here.
Keywords: cooperative relaying; power; multiple access; orthogonal multiple ... See more keywords
Energy Harvesting Non-Orthogonal Multiple Access System With Multi-Antenna Relay and Base Station
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DOI: 10.1109/access.2017.2747085
Abstract: In this paper, we consider downlink non-orthogonal multiple access cooperative communication system. The base station (BS) serves two types of users, which are named relay user (RU) and far user (FU). The BS and RU… read more here.
Keywords: relay; non orthogonal; base station; multiple access ... See more keywords
Non-Orthogonal Multiple Access Assisted Multi-Region Geocast
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DOI: 10.1109/access.2017.2782821
Abstract: This paper proposes a novel location-based multi-group multicast framework, which is termed non-orthogonal multiple access (NOMA)-assisted multi-region geocast. This novel spectrum sharing framework exploits the NOMA technology to realize the simultaneous delivery of different messages… read more here.
Keywords: assisted multi; non orthogonal; multiple access; orthogonal multiple ... See more keywords
Grant-Free Non-Orthogonal Multiple Access With Multiple-Antenna Base Station and Its Efficient Receiver Design
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DOI: 10.1109/access.2019.2956817
Abstract: This paper investigates an uplink grant-free non-orthogonal multiple access (NOMA) system with a multiple-antenna base station (BS), in which each user autonomously transmits its own data by multiplying its unique but non-orthogonal spreading sequence, namely… read more here.
Keywords: free non; access; non orthogonal; orthogonal multiple ... See more keywords
Improved User Fairness in Decode-Forward Relaying Non-Orthogonal Multiple Access Schemes With Imperfect SIC and CSI
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DOI: 10.1109/access.2020.2997285
Abstract: Non-orthogonal multiple access (NOMA) is one of the key technologies to serve in ultra-dense networks with massive connections which is crucial for Internet of Things. Besides, NOMA provides better spectral efficiency compared to orthogonal multiple… read more here.
Keywords: multiple access; imperfect sic; orthogonal multiple; csi ... See more keywords
Rate Compatible Modulation for Non-Orthogonal Multiple Access
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DOI: 10.1109/access.2020.3043529
Abstract: We propose a new Non-Orthogonal Multiple Access (NOMA) coding scheme based on the use of a Rate Compatible Modulation (RCM) encoder for each user. By properly designing the encoders and taking advantage of the additive… read more here.
Keywords: rate compatible; access; multiple access; non orthogonal ... See more keywords
Covert Communications Over Non-Orthogonal Multiple Overt Channels
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DOI: 10.1109/access.2022.3223357
Abstract: The paper exploits overt information of non-orthogonal multiple access (NOMA) systems for camouflage to hide covert information. The optimum strategy of hiding information at the transmitter, accounting for the probability of the warden’s detection error… read more here.
Keywords: information; covert information; detection error; noma ... See more keywords
On uplink non-orthogonal multiple access for 5g: opportunities and challenges
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DOI: 10.1109/cc.2017.8246331
Abstract: In this paper, the concept of grantfree non-orthogonal multiple access (NOMA) for uplink data transmission is elaborated. NOMA in combination with grant-free can be applied to ultra reliability low latency communication (URLLC), massive machine type… read more here.
Keywords: non orthogonal; grant free; uplink non; multiple access ... See more keywords