Filters








21 Hits in 5.9 sec

Ergodic Capacity of NOMA-Based Multi-Antenna LMS Systems with Imperfect Limitations

Haifeng Shuai, Rui Liu, Shibing Zhu, Changqing Li, Yi Fang
2022 Sensors  
In this paper, we analyze the ergodic capacity (EC) of NOMA-based multi-antenna LMS systems in the presence of imperfect limitations, i.e., channel estimation errors, imperfect successive interference  ...  By considering multiple antennas at the satellite and terrestrial sensor users, the closed-form expression for EC of the NOMA-based LMS systems with imperfect limitations is obtained.  ...  The imperfect limitations inevitably restricted EC performance of the NOMA-based multi-antenna LMS system.  ... 
doi:10.3390/s22010330 pmid:35009872 pmcid:PMC8749839 fatcat:bwamr47uefeq3d6j6ktsyqblda

Non-Orthogonal Multiple Access for 5G and Beyond [article]

Yuanwei Liu, Zhijin Qin, Maged Elkashlan, Zhiguo Ding, Arumugam Nallanathan, Lajos Hanzo
2018 arXiv   pre-print
In this context, we provide a comprehensive overview of the state-of-the-art in power-domain multiplexing aided NOMA, with a focus on the theoretical NOMA principles, multiple antenna aided NOMA design  ...  , on the interplay between NOMA and cooperative transmission, on the resource control of NOMA, on the co-existence of NOMA with other emerging potential 5G techniques and on the comparison with other NOMA  ...  We are indeed also approaching the bit-rate limits upper-bounded by the channel capacity of both the classic single-input/single-output systems as well as of the MIMO systems.  ... 
arXiv:1808.00277v1 fatcat:jgxujmeifbedhlul2szgkgsayq

A Survey of Non-Orthogonal Multiple Access for 5G

Linglong Dai, Bichai Wang, Zhiguo Ding, Zhaocheng Wang, Sheng Chen, Lajos Hanzo
2018 IEEE Communications Surveys and Tutorials  
Specifically, the basic principle of NOMA will be introduced at first, with the comparison between NOMA and OMA especially from the perspective of information theory.  ...  slots with the aid of non-orthogonal resource allocation.  ...  Additionally, it has been theoretically shown that OMA cannot always achieve the maximum attainable sum-rate of multi-user wireless systems, while NOMA is capable of achieving the multi-user capacity with  ... 
doi:10.1109/comst.2018.2835558 fatcat:ycxmkfe3rjet7eikctqijc554m

Joint User Pairing and Power Allocation for NOMA-based GEO and LEO Satellite Network

Ruixing Ge, Dongming Bian, Jian Cheng, Kang An, Jing Hu, Guangxia Li
2021 IEEE Access  
Specifically, a novel NOMA framework with two uplink receivers, i.e. the GEO and LEO satellites is established where the NOMA groups are formed considering the subcarrier assignment of ground users.  ...  To maximize the system capacity, an optimization problem is then introduced subject to the decoding threshold and power consumption.  ...  Considering the cooperation with the terrestrial networks, ergodic capacity and outage performances in NOMA-based cognitive hybrid satellite-terrestrial networks were analyzed in [28] - [30] .  ... 
doi:10.1109/access.2021.3078458 fatcat:bf3isihmnbe67hpa3nxiu6xova

Exploiting Secrecy Performance of Uplink NOMA in Cellular Networks

Minh-Sang Van Nguyen, Dinh-Thuan Do, Fatemeh Afghah, S. M. Riazul Islam, Anh-Tu Le
2021 IEEE Access  
They derived expressions in terms of the ergodic sum-rate (SR), outage probability and ergodic capacity.  ...  SECURE UPLINK NOMA WITH SINGLE ANTENNA: SYSTEM MODEL System model of secure uplink NOMA.  ... 
doi:10.1109/access.2021.3092830 fatcat:g764zse77zepfcse436j6vsmju

A Survey on Channel Estimation and Practical Passive Beamforming Design for Intelligent Reflecting Surface Aided Wireless Communications [article]

Beixiong Zheng, Changsheng You, Weidong Mei, Rui Zhang
2022 arXiv   pre-print
surface (IRS) has emerged as a key enabling technology to realize smart and reconfigurable radio environment for wireless communications, by digitally controlling the signal reflection via a large number of  ...  In this paper, we provide a comprehensive survey on the up-to-date research in IRS-aided wireless communications, with an emphasis on the promising solutions to tackle practical design issues.  ...  ergodic capacity.  ... 
arXiv:2110.01292v3 fatcat:c47cn4a42zdhtetjinozjtqb6e

2021 Index IEEE Transactions on Vehicular Technology Vol. 70

2021 IEEE Transactions on Vehicular Technology  
The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and inclusive pagination.  ...  ., +, TVT March 2021 2322-2336 Interference Cancellation via D2D CSI Sharing for MU-MISO-NOMA System With Limited Feedback.  ...  Liu, P., +, TVT June 2021 5265-5274 Interference Cancellation via D2D CSI Sharing for MU-MISO-NOMA System With Limited Feedback.  ... 
doi:10.1109/tvt.2022.3151213 fatcat:vzuzqu54irebpibzp3ykgy5nca

Reliable and Secure Transmission in Multiple Antennas Hybrid Satellite-Terrestrial Cognitive Networks Relying on NOMA

Hong-Nhu Nguyen, Ngoc-Long Nguyen, Nhat-Tien Nguyen, Anh-Tu Le, Nhat-Duy Xuan Ha, Dinh-Thuan Do, Miroslav Voznak
2020 IEEE Access  
show that the such system using higher number of transceiver antennas generally outperform the system with less antennas in terms of OP and IP and reasonable selection of parameters is necessary to remain  ...  In this scenario, the long distance communication is achieved by the satellite equipped multiple antennas to send information to a multi-antenna destinations through the base station acting as relay.  ...  Moreover, the authors in [6] examined performance of AF hybrid terrestrial-satellite relaying networks with opportunistic Scheduling by deriving expressions in term of the ergodic capacity.  ... 
doi:10.1109/access.2020.3041680 fatcat:5legi27rljg4dbrab7b46yfp6e

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  
This paper investigates the performance of a NOMA-based ISTRN under spectrum sharing environment with primary interference.  ...  research of NOMA-based cognitive ISTRN.  ...  In [17] , the authors derived the approximate expression of ergodic capacity (EC) of multiuser ISTRN.  ... 
doi:10.1109/access.2021.3078630 fatcat:2o77wn2qinfcnjj2bgvhn5343a

Performance Analysis and Resource Allocations for a WPCN with a New Nonlinear Energy Harvester Model

Danyang Wang, Fatemeh Rezaei, Chintha Tellambura
2020 IEEE Open Journal of the Communications Society  
The model is based upon the error function and has three parameters. Their values are determined to best fit with measured data. We also develop the asymptotic version of this model.  ...  With these four EH models, we investigate the performance of a WPCN.  ...  Systems with as many as 96 to 128 antennas have been demonstrated. MIMO network can multiply the capacity of a wireless connection without requiring more spectrum.  ... 
doi:10.1109/ojcoms.2020.3022316 fatcat:lwndxtv4tffdfduiu5u2aqgccm

RF Impairments in Wireless Transceivers: Phase Noise, CFO, and IQ Imbalance – A Survey

Amirhossein Mohammadian, Chintha Tellambura
2021 IEEE Access  
These impairments introduce in-band and out-of-band interference terms and degrade the performance of wireless systems.  ...  access (NOMA), ambient backscatter communications, and intelligent reflecting surface (IRS)-assisted communications.  ...  IQ imbalances limit the ergodic capacity and the system capacity with outage upper bounds. This limitation depends on the interference raised at each subcarrier due to IQ imbalance.  ... 
doi:10.1109/access.2021.3101845 fatcat:ete2cakeerdjrahum3gcuuexwe

A Journey from Improper Gaussian Signaling to Asymmetric Signaling

Sidrah Javed, Osama Amin, Basem Shihada, Mohamed-Slim Alouini
2020 IEEE Communications Surveys and Tutorials  
This dual-flavored article initially presents the tutorial base content covering the interplay of reality/complexity, propriety/impropriety and circularity/noncircularity and then surveys majority of the  ...  systems.  ...  In the absence of TS, gains due to IGS occurs both in systems with enough antennas at the base station and in overloaded systems.  ... 
doi:10.1109/comst.2020.2989626 fatcat:zyno7ku6n5eqnp6rrcopczb4qu

2019 Index IEEE Transactions on Signal Processing Vol. 67

2019 IEEE Transactions on Signal Processing  
., +, TSP Dec. 15, 2019 6301-6313 Capacity-Achieving MIMO-NOMA: Iterative LMMSE Detection.  ...  Phan, A., +, TSP March 1, 2019 1175-1190 Error correction codes Capacity-Achieving MIMO-NOMA: Iterative LMMSE Detection.  ...  M Machine bearings Quickest Change Detection in the Presence of a Nuisance Change. Lau, T.S., +, TSP Oct. 15  ... 
doi:10.1109/tsp.2020.2968163 fatcat:dvvpqntb2rc2bjed5nnk4xora4

A Survey on Machine-Learning Techniques for UAV-Based Communications

Petros S Bithas, Emmanouel T Michailidis, Nikolaos Nomikos, Demosthenes Vouyioukas, Athanasios G Kanatas
2019 Sensors  
In this article, we provide a detailed survey of all relevant research works, in which ML techniques have been used on UAV-based communications for improving various design and functional aspects such  ...  Their adoption in various communication-based applications is expected to improve coverage and spectral efficiency, as compared to traditional ground-based solutions.  ...  number of antennas and multiple UAVs with single antennas.  ... 
doi:10.3390/s19235170 pmid:31779133 pmcid:PMC6929112 fatcat:pnur7lmpj5bj7poebmdfpd6bhi

Resource allocation for NOMA wireless systems

Ming Zeng
2020
In this dissertation, we develop novel algorithms to allocate resource for both SISO-NOMA and MIMO-NOMA systems. More specifically, Chapter 2 compares the system capacity of MIMO-NOMA with MIMO-OMA.  ...  It is proved analytically that MIMO-NOMA outperforms MIMO-OMA in terms of both sum channel capacity and ergodic sum capacity when there are multiple users in a cluster.  ...  The superiority of MIMO-NOMA over MIMO-OMA was demonstrated in terms of both sum channel capacity and ergodic sum capacity.  ... 
doi:10.48336/8nwv-ep55 fatcat:4mnjo2qdyffglnk5xuahqdjjiq
« Previous Showing results 1 — 15 out of 21 results