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

Future communication networks may encounter various issues in order to facilitate heavy heterogeneous data traffic and large number of users, therefore more advanced multiple access (MA) schemes are being developed to meet the changing requirements. The research space on making more robust MA scheme is continuously increasing, so it becomes significant to analyze the various schemes to determine the appropriate MA scheme for 5G networks. Therefore, in this paper the comprehensive overview of the most popular and recent MA schemes is presented for 5G networks. This paper mainly classifies the MA techniques in orthogonal MA (OMA) and various types of non-OMA (NOMA) techniques. Specifically, we introduce RSMA (Rate splitting multiple access) and IDMA (interleave division multiple access). Further the close attention is paid to NOMA family, including code-domain NOMA (e.g., SCMA (sparse code multiple access)), power-domain NOMA. Above all, from this exploration, the opportunities and challenges could be notified in MA schemes and further the optimum MA technique can be point out among discussed MA schemes for 5G and beyond communication networks.

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Stability of satellite communication networks with demand assignment multiple access

Proceedings of International Conference on Satellite Communications. ICSC'94 ◽

10.1109/icsc.1994.523103 ◽

2002 ◽

Author(s):

M. Fishman

Keyword(s):

Communication Networks ◽

Multiple Access ◽

Satellite Communication

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Joint power control and user grouping for uplink power domain non-orthogonal multiple access

International Journal of Distributed Sensor Networks ◽

10.1177/15501477211057443 ◽

2021 ◽

Vol 17 (12) ◽

pp. 155014772110574

Author(s):

Bilal Ur Rehman ◽

Mohammad Inayatullah Babar ◽

Arbab Waheed Ahmad ◽

Hesham Alhumyani ◽

Gamil Abdel Azim ◽

...

Keyword(s):

Computational Complexity ◽

Power Control ◽

Communication Networks ◽

Multiple Access ◽

High Speed ◽

Performance Enhancement ◽

Joint Power ◽

User Pairing ◽

Multiple User ◽

Power Domain

Orthogonal multiple access schemes based on assignment of communication resource blocks among multiple contenders, although widely available, still necessitate an upper limit on the number of concurrent users for minimization of multiple-user interference. The feature thwarts efforts to cater for pressing connectivity demands posed by modern-day cellular communication networks. Non-orthogonal multiple access, regarded as a key advancement towards realization of high-speed 5G wireless communication networks, enables multiple users to access the same set of resource blocks non-orthogonally in terms of power with controllable interference, thereby allowing for overall performance enhancement. Owing to the combinatorial nature of the underlying optimization problem involving user pairing/grouping scheme, power control and decoding order, the computational complexity in determining optimal and sub-optimal solutions remains considerably high. This work proposes three novel alternative approaches (Randomly, 2-Opt and Hybrid) for arriving at a near-optimal solution for the problem of user pairing/grouping. The algorithms not only offer reduced computational complexity but also outperform orthogonal multiple access and existing schemes reported in the literature for uplink non-orthogonal multiple access systems.

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A frequency tracking technique for multiple access satellite communication networks

10.1109/tcc.1990.177815 ◽

2002 ◽

Cited By ~ 2

Author(s):

E.W. Chandler

Keyword(s):

Communication Networks ◽

Multiple Access ◽

Satellite Communication ◽

Frequency Tracking ◽

Tracking Technique

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A CLSTM and transfer learning based CFDAMA strategy in satellite communication networks

PLoS ONE ◽

10.1371/journal.pone.0248271 ◽

2021 ◽

Vol 16 (3) ◽

pp. e0248271

Author(s):

Qiang He ◽

Zheng Xiang ◽

Peng Ren

Keyword(s):

Transfer Learning ◽

Communication Networks ◽

Delay Time ◽

Multiple Access ◽

Satellite Communication ◽

Short Term Memory ◽

Prediction Method ◽

Broadband Service ◽

Multiple Access Schemes ◽

Service Capability

With the development of the economy and technology, people’s requirement for communication is also increasing. Satellite communication networks have been paid more and more attention because of their broadband service capability and wide coverage. In this paper, we investigate the scheme of convolutional long short term memory (CLSTM) network and transfer learning (TL) based combined free/demand assignment multiple access (CFDAMA) scheme (CFDAMA-CLSTMTL), which is a new multiple access scheme in the satellite communication networks. Generally, there is a delay time T between sending a request from the user to the satellite and receiving a reply from the satellite. So far, the traditional multiple access schemes have not processed the data generated in this period. So, in order to transmit the data in time, we propose a new prediction method CLSTMTL, which can be used to predict the data generated in this period. We introduce the prediction method into the CFDAMA scheme so that it can reduce data accumulation by the way of sending the slots request which is the sum of slots requested by the user and the predicted slots generated in the delay time. A comparison with CFDAMA-PA and CFDAMA-PB is provided through simulation results, which gives the effect of the CFDAMA-CLSTMTL in a satellite communication network.

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