Ciência-IUL
Publicações
Descrição Detalhada da Publicação
Título Revista
IEEE Access
Ano (publicação definitiva)
2020
Língua
Inglês
País
Estados Unidos da América
Mais Informação
Web of Science®
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Abstract/Resumo
This paper considers the transmission of scalable video via broadcast and multicast to increase spectral and energy efficiency in cellular networks. To address this problem, we study the use of generalized spatial modulation (GSM) combined with non-orthogonal hierarchical M-QAM modulations due to the capability to exploit the potential gains of large scale antenna systems and achieve high spectral and energy efficiencies. We introduce the basic idea of broadcasting/multicasting scalable video associated to GSM, and discuss the key limitations. Non-uniform hierarchical QAM constellations are used for broadcasting/multicasting scalable video while user specific messages are carried implicitly on the indexes of the active transmit antennas combinations. To deal with multiple video and dedicated user streams multiplexed on the same transmission, an iterative receiver with reduced complexity is described. 5G New Radio (NR) based link and system level results are presented. Two different ways of quadruplicating the number of broadcasting programs are evaluated and compared. Performance results show that the proposed GSM scheme is capable of achieving flexibility and energy efficiency gain over conventional multiple input multiple output (MIMO) schemes.
Agradecimentos/Acknowledgements
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Palavras-chave
Broadcasting,Generalized spatial modulation,Multiple input multiple output,Scalable video coding
Classificação Fields of Science and Technology
- Ciências da Computação e da Informação - Ciências Naturais
- Outras Engenharias e Tecnologias - Engenharia e Tecnologia
- Engenharia Eletrotécnica, Eletrónica e Informática - Engenharia e Tecnologia
Registos de financiamentos
Referência de financiamento | Entidade Financiadora |
---|---|
UIDB/EEA/50008/2020 | Fundação para a Ciência e a Tecnologia |
SFRH/BSAB/142993/2018 | Fundação para a Ciência e a Tecnologia |