Results 21 to 30 of about 24,580,897 (275)
Investigating High Performance Implementations of Sparse Code Multiple Access (SCMA) Codebook Design
JISR on Computing, 2022 - The number of mobile devices, IoT devices, and their applications is increasing day by day in recent years and further going to increase in coming years.
Halar Mustafa
doaj +1 more source
Optimum Fairness for Non-Orthogonal Multiple Access [PDF]
2018 IEEE/CIC International Conference on Communications in China (ICCC), 2018 This paper focuses on the fairness issue in non-orthogonal multiple access (NOMA) and investigates the optimization problem that maximizes the worst user's achievable rate. Unlike previous studies, we derive a closed-form expression for the optimal value and solution, which are related to Perron-Frobenius eigenvalue and eigenvector of a defined ...
Ting Qi +3 more
openaire +2 more sources
Polar coded non-orthogonal multiple access [PDF]
2016 IEEE International Symposium on Information Theory (ISIT), 2016 In this paper, polar codes are first applied in non-orthogonal multiple access (NOMA) and the channel polarization idea is extended to NOMA, which is a major multiple access technique in 5G systems. The polar coded NOMA (PC-NOMA) scheme is proposed, whereby the NOMA channel is decomposed into a series of binary-input channels under a two-stage channel ...
Jincheng Dai +3 more
openaire +4 more sources
Non-Orthogonal Multiple Access for Next-Generation Satellite Systems: Flexibility Exploitation and Resource Optimization [PDF]
, 2022 In conventional satellite communication systems, onboard resource management follows pre-design approaches with limited flexibility. On the one hand, this can simplify the satellite payload design.
WANG, Anyue
core +1 more source
Non-Orthogonal Multiple Access for Vehicular Communication [PDF]
2018 15th International Symposium on Wireless Communication Systems (ISWCS), 2018 In this paper, we establish a simple model for the exchange of messages in a vehicular network and we consider fundamental limits on the achievable data rate. For a vehicular network, the exchange of data with other nearby vehicles is particularly important for traffic safety, e.g.
Stephan Pfletschinger, Monica Navarro
openaire +2 more sources
Uplink Non-Orthogonal Multiple Access With Golden Codeword Constellation
IEEE Access, 2021 Non-orthogonal multiple access (NOMA) is a technique to improve spectral efficiency. In uplink NOMA (UL-NOMA) systems, mobile multiusers are globally synchronized to share the same time and frequency resources, and transmit their own independent symbols ...
Hongjun Xu, Narushan Pillay
doaj +1 more source
Cooperative Non-Orthogonal Multiple Access for Future Wireless Communications [PDF]
EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2018 There is a huge demand for increased connectivity and reliability of devices in the fifth generation and beyond of wireless communications so as to ensure massive connectivity and high spectral efficiency.
Sunyoung Lee
doaj +1 more source
Cooperative Non-Orthogonal Multiple Access for Beyond 5G Networks
IEEE Open Journal of the Communications Society, 2021 In the beyond 5G networks, extraordinary demands for data rates and capacity are to be met. A possible candidate to address these challenges is Non-Orthogonal Multiple Access (NOMA) technique, which leads to higher diversity gains and massive ...
Abbas Ahmed +3 more
doaj +1 more source
Cache-Aided Non-Orthogonal Multiple Access [PDF]
2018 IEEE International Conference on Communications (ICC), 2018 In this paper, we propose a novel joint caching and non-orthogonal multiple access (NOMA) scheme to facilitate advanced downlink transmission for next generation cellular networks. In addition to reaping the conventional advantages of caching and NOMA transmission, the proposed cache-aided NOMA scheme also exploits cached data for interference ...
Lin Xiang 0001 +5 more
openaire +5 more sources
Cooperative Non-Orthogonal Multiple Access with Energy Harvesting
Information, 2017 In this paper, we analyze the outage probability of an amplify-and-forward (AF) cooperative non-orthogonal multiple access (NOMA) model in multi-relay multiuser networks.
Weidong Guo, Yunfeng Wang
doaj +1 more source