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- Title
Spectral Efficiency of the Multiway Massive System over Rician Fading Channels.
- Authors
He, Junyi; Zhang, Junnan; Song, Cheng; Wu, Mengxiang
- Abstract
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.
- Subjects
RICIAN channels; MIMO systems; NETWORK performance; ANTENNAS (Electronics); INFORMATION sharing
- Publication
Security & Communication Networks, 2021, p1
- ISSN
1939-0114
- Publication type
Article
- DOI
10.1155/2021/6618363