Capacity enhancement and interference management for interactive satellite networks

Capacity enhancement and interference management for interactive satellite networks

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Advances in Communications Satellite Systems Proceedings of The 36th International Communications Satellite Systems Conference (ICSSC-2018) — Recommend this title to your library

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We investigate the effect of aggressive frequency reuse in multibeam satellite systems using novel techniques. The techniques include our previously proposed non-spreading non-orthogonal multiple access (NOMA) scheme as well as spread spectrum code division multiplexing (CDM) NOMA. The 4-color frequency reuse is used as benchmarks, while the 2-color 70-beam and 1-color 20-beam, exhibiting significant co-channel interference (CCI), were considered as interference-limited scenarios for comparative capacity performance evaluations. The operation accuracy of the successive interference cancellation (SIC) at the core of our interference mitigation (IM) techniques was also investigated. In terms of overall achievable capacity, the results show promising achievements in the 1-color 20-beam scenario while there are no capacity gains indicated in 70-beam scenario with 2-color frequency mapping. However, a significant fairness enhancement has been shown in both scenarios.

Inspec keywords: code division multiple access; cochannel interference; interference suppression; cellular radio; frequency allocation; spread spectrum communication; satellite communication; radiofrequency interference

Other keywords: achievable capacity; nonorthogonal multiple access scheme; capacity enhancement; 20-beam scenario; multibeam satellite systems; comparative capacity performance evaluations; 4-color frequency reuse; 2-color 70-beam; significant co-channel interference; 1-color 20-beam; interference management; successive interference cancellation; significant fairness enhancement; aggressive frequency reuse; interactive satellite networks; capacity gains; interference mitigation techniques; 70-beam scenario; spread spectrum code division; 2-color frequency mapping

Subjects: Electromagnetic compatibility and interference; Mobile radio systems; Multiple access communication

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