Publication: Receive quadrature reflecting modulation for ris-empowered wireless communications
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KU-Authors
KU Authors
Co-Authors
Yuan, Jing
Wen, Miaowen
Li, Qiang
Alexandropoulos, George C.
Chen, Gaojie
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Abstract
In this paper, we propose a novel reconfigurable intelligent surface (RIS)-based modulation scheme, named RIS-aided receive quadrature reflecting modulation (RIS-RQRM), by resorting to the concept of spatial modulation. In RIS-RQRM, the whole RIS is virtually partitioned into two halves to create signals with only in-phase (I-) and quadrature (Q-) components, respectively, and each half forms a beam to a receive antenna whose index carries the bit information. Furthermore, we design a low-complexity and non-coherent detector for RIS-RQRM, which measures the maximum power and polarities of the I- and Q- components of received signals. Approximate bit error rate (BER) expressions are derived for RIS-RQRM over Rician fading channels. Simulation results show that RIS-RQRM outperforms the existing counterparts without I/Q index modulation in terms of BER in the low signal-to-noise ratio region.
Source
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Subject
Engineering, Electrical, Electronic, Telecommunications, Transportation Science, Technology
Citation
Has Part
Source
IEEE Transactions on Vehicular Technology
Book Series Title
Edition
DOI
10.1109/TVT.2021.3073161