Multi-Branch Tomlinson-Harashima Precoding for Rate Splitting Based Systems with Multiple Antennas

Rate splitting (RS) has emerged as a valuable technology for wireless communications systems due to its capability to deal with uncertainties in the channel state information at the transmitter (CSIT). RS with linear and non-linear precoders, such as the Tomlinson- Harashima (THP) precoder, have bee...

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Bibliographic Details
Published in:Proceedings of the ... IEEE International Conference on Acoustics, Speech and Signal Processing (1998) pp. 4885 - 4889
Main Authors: Flores, A. R., de Lamare, R. C., Clerckx, B.
Format: Conference Proceeding
Language:English
Published: IEEE 06.06.2021
Subjects:
Multi-Branch
Multiuser MIMO
Precoding
Rate-Splitting
Robustness
Signal processing
Simulation
Tomlinson-Harashima Precoding
Transmitters
Uncertainty
Wireless communication
ISSN:2379-190X
Online Access:Get full text
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Summary:Rate splitting (RS) has emerged as a valuable technology for wireless communications systems due to its capability to deal with uncertainties in the channel state information at the transmitter (CSIT). RS with linear and non-linear precoders, such as the Tomlinson- Harashima (THP) precoder, have been explored in the downlink (DL) of multiuser multi antenna systems. In this work, we propose a multi-branch (MB) scheme for a RS-based multiple-antenna system, which creates patterns to order the transmitted symbols and enhances the overall sum rate performance compared to existing approaches. Analytical expressions to describe the signal-to-interference-plus- noise ratio (SINR) and compute the sum rate are derived. Simulation results show that the proposed MB-THP for RS outperforms conventional THP and MB-THP schemes.
ISSN:2379-190X
DOI:10.1109/ICASSP39728.2021.9413886