Full Duplex and Dynamic TDD: Pushing the Limits of Spectrum Reuse in Multi-Cell Communications
| Autor: | Gustav Wikström, Jose Mairton B. da Silva, Ratheesh K. Mungara, Carlo Fischione |
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| Rok vydání: | 2021 |
| Předmět: |
Beamforming
Computer science food and beverages 020206 networking & telecommunications Throughput 02 engineering and technology Spectral efficiency Reuse Interference (wave propagation) Computer Science Applications Base station Telecommunications link 0202 electrical engineering electronic engineering information engineering Electronic engineering Cellular network Electrical and Electronic Engineering |
| Zdroj: | IEEE Wireless Communications. 28:44-50 |
| ISSN: | 1558-0687 1536-1284 |
| Popis: | Although in cellular networks full duplex and dynamic time-division duplexing promise increased spectrum efficiency, their potential is so far challenged by increased interference. While previous studies have shown that self-interference can be suppressed to a sufficient level, we show that the cross-link interference for both duplexing modes, especially from base station to base station, is the remaining challenge in multi-cell networks, restricting the uplink performance. Using beamforming techniques of low complexity, we show that this interference can be mitigated, and that full duplex and dynamic time-division duplexing can substantially increase the capacity of multi-cell networks. Our results suggest that if we can control the cross-link interference in full duplex, we can almost double the multi-cell network capacity as well as user throughput. Therefore, the techniques in this article have the potential to enable a smooth introduction of full duplex into cellular systems. |
| Databáze: | OpenAIRE |
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