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Article overview
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Rate Region of MIMO RIS-assisted Broadcast Channels with Rate Splitting and Improper Signaling | | Mohammad Soleymani
; Ignacio Santamaria
; Eduard Jorswieck
; | | Date: |
2 Jan 2023 | | Abstract: | In this paper, we study the achievable rate region of 1-layer rate splitting
(RS) in the presence of hardware impairment (HWI) and improper Gaussian
signaling (IGS) for a single-cell reconfigurable intelligent surface (RIS)
assisted broadcast channel (BC). We assume that the transceivers may suffer
from an imbalance in in-band and quadrature signals, which is known as I/Q
imbalance (IQI). The received signal and noise can be improper when there
exists IQI. Therefore, we employ IGS to compensate for IQI as well as to manage
interference. Our results show that RS and RIS can significantly enlarge the
rate region, where the role of RS is to manage interference while RIS mainly
improves the coverage. | | Source: | arXiv, 2301.00594 | | Services: | Forum | Review | PDF | Favorites | |
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