Publicação
Uplink spectral efficiency for small-cells with dual-hop amplify-and-forward relaying at 28 GHz
| Resumo: | Abstract: In this study, the performance, cellular coverage and average spectral efficiency are analysed for the uplink of small cells with dual-hop amplify-and-forward relaying. Specifically, a cellular network with an optimum combiner at a destination, multiple-antennas relays and multiple-antennas destination affected by multiple interferers is considered. The techniques of multiple relays transmission (MRT) and relay selection with transmit antenna selection (RS-TAS) are analysed and compared. The moment-generating function of the signal-to-interference-plus-noise ratio is derived in order to obtain the average bit-error rate for both transmission techniques. Then, an adaptive scheme modulation and different transmission power levels are used to obtain the coverage and the average cellular spectral efficiency by considering a path-loss model at 28 GHz. Results show that using a relay is so efficient compared to a non-relay system. Moreover, RS-TAS outperforms MRT in both coverage and efficiency |
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| Autores principais: | Merino Acuña, Henry William, 1987- |
| Assunto: | Telecomunicações Radiofrequência Radio frequency Telecommunication Adaptive modulation Amplify and forward communication Antenna arrays Artigo original |
| Ano: | 2019 |
| País: | Brasil |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | IBICT |
| Idioma: | inglês |
| Origem: | Oasisbr |
| Resumo: | Abstract: In this study, the performance, cellular coverage and average spectral efficiency are analysed for the uplink of small cells with dual-hop amplify-and-forward relaying. Specifically, a cellular network with an optimum combiner at a destination, multiple-antennas relays and multiple-antennas destination affected by multiple interferers is considered. The techniques of multiple relays transmission (MRT) and relay selection with transmit antenna selection (RS-TAS) are analysed and compared. The moment-generating function of the signal-to-interference-plus-noise ratio is derived in order to obtain the average bit-error rate for both transmission techniques. Then, an adaptive scheme modulation and different transmission power levels are used to obtain the coverage and the average cellular spectral efficiency by considering a path-loss model at 28 GHz. Results show that using a relay is so efficient compared to a non-relay system. Moreover, RS-TAS outperforms MRT in both coverage and efficiency |
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