Spectral Efficiency of the Multiway Massive System over Rician Fading Channels
In this study, we consider a multiway massive multi-input multi-output (MIMO) relay network over Rician fading channels, where all users intend to share their information with the other users via amplify-and-forward (AF) relays equipped with a great number of antennas. More practical, the imperfect...
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| Veröffentlicht in: | Security and communication networks 2021, Vol.2021, p.1-8 |
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| creator | He, Junyi Zhang, Junnan Song, Cheng Wu, Mengxiang |
| description | In this study, we consider a multiway massive multi-input multi-output (MIMO) relay network over Rician fading channels, where all users intend to share their information with the other users via amplify-and-forward (AF) relays equipped with a great number of antennas. More practical, the imperfect channel state information (CSI) is taken into account. To evaluate the performance of the considered networks, we derived an analytical approximation expression for the spectral efficiency with zero-forcing (ZF) receivers in a closed form. To obtain more insights, the asymptotic analysis as the number of relay antenna approaching infinity is carried out. Finally, the power scaling law is analyzed for two scenarios. The results reveal that (1) massive MIMO is capable of compensating the loss caused by Rician fading, (2) the sum spectral efficiency increases with the increase of the Rician factor, and (3) deploying large-scale antenna is effective to save cost and keep performance. |
| doi_str_mv | 10.1155/2021/6618363 |
| format | Article |
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More practical, the imperfect channel state information (CSI) is taken into account. To evaluate the performance of the considered networks, we derived an analytical approximation expression for the spectral efficiency with zero-forcing (ZF) receivers in a closed form. To obtain more insights, the asymptotic analysis as the number of relay antenna approaching infinity is carried out. Finally, the power scaling law is analyzed for two scenarios. The results reveal that (1) massive MIMO is capable of compensating the loss caused by Rician fading, (2) the sum spectral efficiency increases with the increase of the Rician factor, and (3) deploying large-scale antenna is effective to save cost and keep performance.</description><identifier>ISSN: 1939-0114</identifier><identifier>EISSN: 1939-0122</identifier><identifier>DOI: 10.1155/2021/6618363</identifier><language>eng</language><publisher>London: Hindawi</publisher><subject>Antennas ; Channels ; Efficiency ; Fading ; Mathematical analysis ; Performance evaluation ; Random variables ; Relay networks ; Satellite communications ; Scaling laws ; Spectra ; Wireless communications ; Wireless networks</subject><ispartof>Security and communication networks, 2021, Vol.2021, p.1-8</ispartof><rights>Copyright © 2021 Junyi He et al.</rights><rights>Copyright © 2021 Junyi He et al. 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| source | Wiley Open Access; Alma/SFX Local Collection; EZB Electronic Journals Library |
| subjects | Antennas Channels Efficiency Fading Mathematical analysis Performance evaluation Random variables Relay networks Satellite communications Scaling laws Spectra Wireless communications Wireless networks |
| title | Spectral Efficiency of the Multiway Massive System over Rician Fading Channels |
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