Publicação
A spectral efficiency enhancement for chirp spread spectrum downlink communications
| Resumo: | The objective of the paper is to propose a transmitter/receiver system that increases the spectral efficiency in the context of CSS-type downlink communications. For this purpose, we propose to transmit simultaneously on the same time/frequency resources signals intended for several receivers. By controlling the level of interference between the different users and the properties of quasi-orthogonality between up and down chirps, we show that each receiver can correctly demodulate the symbols intended for it. |
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| Autores principais: | Araújo, Daniel Costa |
| Outros Autores: | Ferré, Guillaume; Cavalcante, Charles Casimiro; Guerreiro, Igor Moáco |
| Assunto: | NOMA Chirp spread spectrum Successive interference cancellation LoRa IoT Comunicações de amplo espectro |
| Ano: | 2022 |
| País: | Brasil |
| Tipo de documento: | outro |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | IBICT |
| Idioma: | inglês |
| Origem: | Oasisbr |
| Resumo: | The objective of the paper is to propose a transmitter/receiver system that increases the spectral efficiency in the context of CSS-type downlink communications. For this purpose, we propose to transmit simultaneously on the same time/frequency resources signals intended for several receivers. By controlling the level of interference between the different users and the properties of quasi-orthogonality between up and down chirps, we show that each receiver can correctly demodulate the symbols intended for it. |
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