A Power Domain Multiplexing Based Co-Carrier Transmission Method in Hybrid Satellite Communication Networks

Tian, Li; Hao, Xuekun; Yue, Xinwei

doi:10.1109/access.2020.3005860

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…In this section, simulation analysis of the outage probability for RIS-assisted non-terrestrial NOMA networks is provided to adequately confirm the previous conclusions form the above subsections. Listing statistics for convenience, Table 1 shows the fixed numerical values of the parameters used in this paper [9,39,43] and BPCU is the abbreviation of bit per channel use. Without loss of generality, the method of controlling variables is adopted, we just change only a certain parameter to analyze the probability of outage in this scenario for a more intuitive expression.…”

Section: Simulation and Numerical Resultsmentioning

confidence: 99%

“…In non-terrestrial communication systems, there is an extreme long distance from the satellite to the RIS and the signals are mainly attenuated by free-space path loss. Therefore, a free space transmission model is often used to predict the received signals in a line-of-sight environment [42], and the signals should mainly experience large-scale fading [39], so we consider the channels between satellite and RIS are modeled as large-scale fading channels. The channels between RIS and the UEs are mainly None Line of Sight, then we consider the RIS-UEs channels to be modeled as Nakagami-m fading channels.…”

Section: System Modelmentioning

confidence: 99%

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Reconfigurable Intelligent Surface Assisted Non-Terrestrial NOMA Networks

Lian

Yue

et al. 2022

Wireless Communications and Mobile Computing

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This paper considers the application of reconfigurable intelligent surface (RIS) to non-terrestrial non-orthogonal multiple access (NOMA) networks. More specifically, the performance of a pair of non-orthogonal users for RIS assisted non-terrestrial NOMA networks is investigated over large-scale fading and Nakagami- m fading cascaded channel. The exact and asymptotic expressions of outage probability are derived for the nearby user and distant user with the imperfect successive interference cancellation (SIC) and perfect SIC schemes. Based on the approximated results, the diversity orders of these two users are obtained in the high signal-to-noise ratios. The simulation results are used to verify the theoretical derivations and find that: 1) The outage behaviors of RIS assisted non-terrestrial NOMA networks outperforms than that of orthogonal multiple access; 2) By increasing the number of reflecting elements of RIS and Nagakami- m fading factors m ′ and Ω , RIS-assisted non-terrestrial NOMA networks are able to achieve the enhanced outage performance.

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Section: Simulation and Numerical Resultsmentioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%

Reconfigurable Intelligent Surface Assisted Non-Terrestrial NOMA Networks

Lian

Yue

et al. 2022

Wireless Communications and Mobile Computing

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“…The outage probability was discussed to confirm the advancement in coordinated NOMA compared with orthogonal multiple access (OMA). Inspired by NOMA, our previous work in [15] proposed a co-carrier transmission method that enables two users' signals to be allocated in one downlink carrier. Further, Ref.…”

Section: Literature Reviewmentioning

confidence: 99%

High Reliable Uplink Transmission Methods in GEO–LEO Heterogeneous Satellite Network

et al. 2023

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As a significant component of non-terrestrial networks, satellite communication has gradually evolved into a heterogeneous topology where the network nodes are classified as low Earth orbit (LEO) and geostationary Earth orbit (GEO) nodes. Considering the advantage of low transmission delay of LEO satellites in a heterogeneous network, ground users are arranged to access LEO satellites in the first priority. By fully understanding the equivalent channel gain difference in the beam-edge and beam-center users, we develop non-orthogonal multiple access (NOMA) in an LEO network where different users are allocated in the same resource block. As a complementary strategy, the beam-edge user has the ability to connect the GEO satellite if the LEO links are not available. That is, the two users are served cooperatively by LEO and GEO satellites in an orthogonal manner. In this paper, we provide deep insights for the uplink transmission performance of NOMA and cooperative orthogonal multiple access methods. As a general metric, the analytical expressions of outage probability are derived and the diversity orders are also provided. The simulation results show that NOMA is capable of providing remarkable performance in low signal-to-noise ratio regions and is more promising when the channels are assumed to be ordered.

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“…The outage probability was derived to validate the advancement compared with conventional MA schemes. Inspired by NOMA, we developed a co-carrier transmission method in our previous work [20]. Different from the works in the above, the co-carrier method occupies partial bandwidth instead of the whole spectral resource acquired in conventional NOMA.…”

Section: Introductionmentioning

confidence: 99%

“…Particularly, ref. [20] further gave instructions on pairing suitable users for co-carrier transmission.…”

Section: Introductionmentioning

confidence: 99%

A Spectrum-Saving Transmission Method in Multi-Antenna Satellite Communication Star Networks: Sharing the Frequency with Terminals

Hao²,

Yue

2023

Entropy

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Satellite communication networks have gradually been recognized as an effective way to enhance the ground-based wireless communication. Considering the weight restriction of payloads, multi-antenna technologies have recently come into use on satellite platforms, and are capable of generating beams flexibly to provide services. To avoid incurring interferences, adjacent beams are designed to take different spectral resources. Unfortunately, this may limit the simultaneously accessed terminals since the spectrum cannot be fully used. In this paper, we propose a spectrum-saving transmission method in a satellite star network, where terminals communicate with each other through the hub station. Taking advantage of the great transmission capability differences of the hub station and terminals, we could allocate them the same spectral resources. Specifically, it is not necessary to use exclusive frequency bands for terminals.The proposed method can play a significant role when large numbers of users need to access the system with limited spectrum resource. To give a deep insight into the spectrum-saving method, the expressions of ergodic sum-rate are provided, and the impact of the number of accessed terminals is further analyzed. Simulation results validate the advantage of the proposed method in terms of bit error rate and ergodic sum rate.

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A Power Domain Multiplexing Based Co-Carrier Transmission Method in Hybrid Satellite Communication Networks

Cited by 7 publications

References 21 publications

Reconfigurable Intelligent Surface Assisted Non-Terrestrial NOMA Networks

Reconfigurable Intelligent Surface Assisted Non-Terrestrial NOMA Networks

High Reliable Uplink Transmission Methods in GEO–LEO Heterogeneous Satellite Network

A Spectrum-Saving Transmission Method in Multi-Antenna Satellite Communication Star Networks: Sharing the Frequency with Terminals

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