112 Hits in 7.0 sec

Performance Evaluation of NOMA-based Cognitive Integrated Satellite Terrestrial Relay Networks with Primary Interference

Rui Liu, Kefeng Guo, Kang An, Shibing Zhu, Changqing Li, Lijuan Gao
2021 IEEE Access  
INDEX TERMS Integrated satellite-terrestrial relay network (ISTRN), Non-orthogonal multiple access (NOMA), Cognitive radio (CR), Primary interference (PI).  ...  This paper investigates the performance of a NOMA-based ISTRN under spectrum sharing environment with primary interference.  ...  Abbreviations I SatCom satellite communication STNs satellite-terrestrial networks ISTRN integrated satellite-terrestrial relay network CR cognitive radio OMA orthogonal multiple access NOMA non-orthogonal  ... 
doi:10.1109/access.2021.3078630 fatcat:2o77wn2qinfcnjj2bgvhn5343a

The Application of Power-Domain Non-orthogonal Multiple Access in Satellite Communication Networks

Xiaojuan Yan, Kang An, Tao Liang, Gan Zheng, Zhiguo Ding, Symeon Chatzinotas, Yan Liu
2019 IEEE Access  
cooperative satellite networks with satellite/terrestrial relays, are provided, along with the motivation and research methodology for each scenario.  ...  Then, the advantage and benefit of introducing the NOMA scheme in various satellite architectures, such as conventional downlink/uplink satellite networks, cognitive satellite terrestrial networks, and  ...  On the one hand, the use of the CR strategy can ensure spectrum sharing between a satellite network, termed as a primary/cognitive network, and a terrestrial network which acts as a cognitive/primary network  ... 
doi:10.1109/access.2019.2917060 fatcat:xxz7tgel2bbrzit5dcycetojxq

Outage Performance of NOMA-based Cognitive Hybrid Satellite-Terrestrial Overlay Networks by Amplify-and-Forward Protocols

Xiaokai Zhang, Bangning Zhang, Kang An, Zhuyun Chen, Silin Xie, Heng Wang, Long Wang, Daoxing Guo
2019 IEEE Access  
(NOMA) scheme, in which half-duplexing terrestrial secondary networks cooperate with a primary satellite network for dynamic spectrum access.  ...  In this paper, we investigate the outage probability (OP) performance of amplify-and-forward (AF) cognitive hybrid satellite-terrestrial overlay networks (CHSTONs) with the non-orthogonal multiple access  ...  The work in [27] investigated the integration of NOMA with CR into holistic 5G system, which constituted a cognitive NOMA network, for more intelligent spectrum sharing.  ... 
doi:10.1109/access.2019.2925314 fatcat:w3jsnsiq4zc3ppd3hvn2qznj2u

5G Embraces Satellites for 6G Ubiquitous IoT: Basic Models for Integrated Satellite Terrestrial Networks [article]

Xinran Fang, Wei Feng, Te Wei, Yunfei Chen, Ning Ge, Cheng-Xiang Wang
2021 arXiv   pre-print
, the establishment of an efficient hybrid satellite-terrestrial network (HSTN) still faces many challenges.  ...  Consequently, the integration of terrestrial and satellite components has been widely studied, to take advantage of both sides and enable seamless broadband coverage.  ...  In contrast, the case in which a terrestrial network acted as the primary system, sharing the spectrum with the satellite was studied in [62] .  ... 
arXiv:2011.03182v2 fatcat:chgzugogzveudb4kp7ljs53gbm

Performance of NOMA-enabled Cognitive Satellite-Terrestrial Networks with Non-Ideal System Limitations

Yerassyl Akhmetkaziyev, Galymzhan Nauryzbayev, Sultangali Arzykulov, Ahmed M. Eltawil, Khaled M. Rabie, Xingwang Li
2021 IEEE Access  
In this regard, the integration of cognitive radio and non-orthogonal multiple access (NOMA) techniques into STNs is considered as a promising remedy.  ...  Furthermore, to achieve performance fairness among the users, power allocation factors based on coverage fairness for primary and secondary NOMA users are provided.  ...  In [24] , the authors considered both direct and relay communication links based on an overlay approach to numerous terrestrial users from a primary satellite source with the coexistence of a secondary  ... 
doi:10.1109/access.2021.3061278 fatcat:gay6qru65bck5oyddg3ln34xiq

Enhancing Spectrum Efficiency for Multiple Users in Hybrid Satellite-Terrestrial Networks

Nhat-Tien Nguyen, Hong-Nhu Nguyen, Ngoc-Long Nguyen, Anh-Tu Le, Dinh-Thuan Do, Miroslav Voznak
2021 IEEE Access  
RELATED WORK The authors in [31] considered the performance of an overlay cognitive hybrid satellite-terrestrial relaying network (CSTRN).  ...  INTRODUCTION Regarded as an attractive method for achieving high throughput with a broad coverage area, hybrid satellite systems and terrestrial networks can be integrated to form hybrid satellite terrestrial  ...  His research interests include signal processing in wireless communications networks, MIMO, NOMA, UAV networks, satellite systems, physical layer security, device-to-device transmission and energy harvesting  ... 
doi:10.1109/access.2021.3069247 fatcat:extyjd6xsjd2xb6nywlnhvly34

Cognitive Non-ideal NOMA Satellite-Terrestrial Networks with Channel and Hardware Imperfections

Yerassyl Akhmetkaziyev, Galymzhan Nauryzbayev, Sultangali Arzykulov, Ahmed M. Eltawil, Khaled M. Rabie
2021 2021 IEEE Wireless Communications and Networking Conference (WCNC)  
Index Terms-Cognitive radio (CR), non-orthogonal multiple access (NOMA), outage probability, satellite-terrestrial network (STN).  ...  This paper investigates a non-orthogonal multiple access (NOMA) assisted cognitive satellite-terrestrial network which is practically limited by interference noises, transceiver hardware impairments, imperfect  ...  CONCLUSION In this paper, we have evaluated the performance of cognitive NOMA-assisted STNs wherein terrestrial SUs enjoy the access to spectrum with the satellite PN limited only by interference temperature  ... 
doi:10.1109/wcnc49053.2021.9417386 fatcat:vqiquv7txngqbouhbwpicjnuxm

Coverage Analysis of CR-based Satellite-Terrestrial NOMA Networks with Practical System Impairments

Yerassyl Akhmetkaziyev, Galymzhan Nauryzbayev, Sultangali Arzykulov, Ahmed M. Eltawil, Theodoros A. Tsiftsis
2021 ICC 2021 - IEEE International Conference on Communications  
In this paper, we investigate a non-orthogonal multiple access (NOMA) assisted cognitive satellite-terrestrial network under practical system conditions, such as transceiver hardware impairments, channel  ...  Generalized coverage probability formulas for NOMA users in both primary and secondary networks are derived considering the impact of interference temperature constraint.  ...  Moreover, the integration with cognitive radio (CR) technique allows CSTNs to solve critical issues associated with spectral congestion since it enables spectrum sharing between satellite and terrestrial  ... 
doi:10.1109/icc42927.2021.9500872 fatcat:3lntvek7pjdsdncbnk4j3uyvcu

HST-NNC: A Novel Hybrid Satellite-Terrestrial Communication with NOMA and Network Coding Systems

Michail Karavolos, Nikolaos Nomikos, Demosthenes Vouyioukas, P. Takis Mathiopoulos
2021 IEEE Open Journal of the Communications Society  
In this paper, a combined NOMA-NC (NNC) scheme is presented and integrated into an HSTN consisting of a low earth orbit (LEO) satellite belonging to an LEO constellation, a terrestrial base station (BS  ...  Hybrid satellite-terrestrial networks (HSTNs) are considered to be a promising solution in dealing with coverage and mobility challenges encountered in 5 th generation (5G) networks that employ novel multiple  ...  The research in [24] presented a NOMA-based scheme when secondary users coexist with primary users served by an HSTN with a terrestrial relay in a cognitive fashion.  ... 
doi:10.1109/ojcoms.2021.3072110 fatcat:ernv43vtyzd4vglytrw7ogh5fq

Joint Effects of Imperfect CSI and SIC on NOMA Based Satellite-Terrestrial Systems

Jinlong Zhao, Xinwei Yue, Shaoli Kang, Wanwei Tang
2021 IEEE Access  
The effects of both imperfect channel state information (CSI) and imperfect successive interference cancellation (SIC) on the NOMA based satellite-terrestrial system are taken into account.  ...  First, the outage performance of the proposed system is evaluated, and the closed-form expressions for the exact and asymptotic outage probabilities are obtained.  ...  The NOMA based integrated terrestrial-satellite networks were investigated, in which the satellite and NOMA based terrestrial networks cooperatively provided services to ground users [6] .  ... 
doi:10.1109/access.2021.3051306 fatcat:yswnnahkkbdwna6uyf4svq2o6a

A Survey of Rate-optimal Power Domain NOMA with Enabling Technologies of Future Wireless Networks [article]

Omar Maraqa, Aditya S. Rajasekaran
2020 arXiv   pre-print
In this paper, we survey the integration of PD-NOMA with the enabling communications schemes and technologies that are expected to meet the various requirements of B5G networks.  ...  In particular, this paper surveys the different rate optimization scenarios studied in the literature when PD-NOMA is combined with one or more of the candidate schemes and technologies for B5G networks  ...  Also, the authors would like to thank Ericsson Canada Inc. and the Discovery Grant of the Natural Sciences and Engineering Research Council of Canada for support.  ... 
arXiv:1909.08011v4 fatcat:xlt7aul75zhozkb2stpbs4q2fm

On Performance Analysis of NOMA-Aided Hybrid Satellite Terrestrial Relay with Application in Small-cell Network

Ngoc-Long Nguyen, Hong-Nhu Nguyen, Anh-Tu Le, Dinh-Thuan Do, Miroslav Voznak
2020 IEEE Access  
The authors in [23] investigated the performance of an underlay cognitive hybrid satellite-terrestrial network which includes a primary satellite transmitter with corresponding terrestrial receiver while  ...  In particular, they only considered the priority of primary user while the fairness between the primary network and the secondary network did not evaluate.  ...  His research interest includes signal processing in wireless communications network, MIMO, NOMA, UAV network, satellite system, physical layer security, device-todevice transmission and energy harvesting  ... 
doi:10.1109/access.2020.3032139 fatcat:5n2mgzlkorgejpfffs3csthxlm

UAV Based Satellite-Terrestrial Systems with Hardware Impairment and Imperfect SIC: Performance Analysis of User Pairs

Ngoc-Long Nguyen, Si-Phu Le, Anh-Tu Le, Nhan Duc Nguyen, Dinh-Thuan Do, Miroslav Voznak
2021 IEEE Access  
We investigated the outage performance of non-orthogonal multiple access (NOMA) in satellite-terrestrial systems which contain hardware impairments.  ...  In the main results, we derived the closed-form expression of the outage probability, and to evaluate the system performance of two NOMA users, we obtained the approximate expressions for high signal-to-noise  ...  A joint iteration algorithm was also proposed to maximize the interference temperature for the satellite in an integrated terrestrial-satellite network-based NOMA [11] .  ... 
doi:10.1109/access.2021.3107253 fatcat:rdk6wzboy5b65gsntsz7i3n4xe

Hybrid Satellite-Terrestrial Relay Network: Proposed Model and Application of Power Splitting Multiple Access

Dinh-Thuan Do, Anh-Tu Le, Rupak Kharel, Adão Silva, Mohammad Abu Shattal
2020 Sensors  
The development of hybrid satellite-terrestrial relay networks (HSTRNs) is one of the driving forces for revolutionizing satellite communications in the modern era.  ...  With this intent, this paper provides a comprehensive performance evaluation of HSTRNs employing non-orthogonal multiple access technique.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s20154296 pmid:32752144 pmcid:PMC7435719 fatcat:dt4krua2hffnjhq2unbriauroq

Envisioning Device-to-Device Communications in 6G [article]

Shangwei Zhang, Jiajia Liu, Hongzhi Guo, Mingping Qi, Nei Kato
2019 arXiv   pre-print
multiple access (NOMA) cognitive Networking.  ...  To construct an efficient implementation of intelligent D2D in future 6G, we outline a number of potential D2D solutions associating with 6G in terms of mobile edge computing, network slicing, and Non-orthogonal  ...  Illustration of the NOMA and D2D based cognitive networking.  ... 
arXiv:1912.05771v1 fatcat:qu4j46z4gzckzj4wwkv3q6vv4y
« Previous Showing results 1 — 15 out of 112 results