A Novel Transmission Strategy for Hybrid RIS Aided Millimeter Wave OTFS Systems

This article focuses on the joint channel estimation and data detection (JCEDD) for hybrid reconfigurable intelligent surface (HRIS) aided millimeter wave OTFS systems. Firstly, a new transmission structure is designed. Within the pilot durations of the designed structure, partial HRIS elements are...

Full description

Saved in:
Bibliographic Details
Published in2022 14th International Conference on Wireless Communications and Signal Processing (WCSP) pp. 1058 - 1063
Main Authors Li, Muye, Zhang, Shun, Ge, Yao, Gao, Feifei, Fan, Pingzhi
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2022
Subjects
Array signal processing
Channel estimation
Human-robot interaction
hybrid RIS
joint channel estimation and data detection
Message passing
OTFS
parameter extraction
Simulation
Symbols
Wireless communication
Online AccessGet full text

Cover

More Information
Summary:This article focuses on the joint channel estimation and data detection (JCEDD) for hybrid reconfigurable intelligent surface (HRIS) aided millimeter wave OTFS systems. Firstly, a new transmission structure is designed. Within the pilot durations of the designed structure, partial HRIS elements are alternatively activated. The time domain channel model is then exhibited. Secondly, the received signal model for both the HRIS and the base station are studied. Thirdly, by utilizing channel parameters acquired at the HRIS, an HRIS beamforming design strategy is proposed. For the OTFS transmission, we propose a JCEDD scheme over delay-Doppler domain. In this scheme, message passing and expectation-maximization algorithm are iteratively executed to simultaneously acquire the channel and the unknown data symbols. Finally, simulation results are provided to validate the effectiveness of our proposed JCEDD scheme.
DOI:10.1109/WCSP55476.2022.10039313