TY - JOUR
T1 - Frequency-Mixing Intelligent Reflecting Surfaces for Nonlinear Wireless Propagation
AU - Yuan, Jide
AU - De Carvalho, Elisabeth
AU - Williams, Robin Jess
AU - Bjornson, Emil
AU - Popovski, Petar
PY - 2021
Y1 - 2021
N2 - We introduce the concept of frequency-mixing intelligent reflecting surface (FMx-IRS), where the elements of the surface continuously change the phases of the incident signals. In this way, the FMx-IRS acts as a frequency mixer and makes the propagation environment nonlinear, thereby introducing new frequencies. We study the basic features of the proposed concept and demonstrate its advantages that stem from the novel type of control over the wireless propagation. The channel decoupling feature and the correlation between reflected channels are elaborated for the architecture, and are validated by the simulations.
AB - We introduce the concept of frequency-mixing intelligent reflecting surface (FMx-IRS), where the elements of the surface continuously change the phases of the incident signals. In this way, the FMx-IRS acts as a frequency mixer and makes the propagation environment nonlinear, thereby introducing new frequencies. We study the basic features of the proposed concept and demonstrate its advantages that stem from the novel type of control over the wireless propagation. The channel decoupling feature and the correlation between reflected channels are elaborated for the architecture, and are validated by the simulations.
KW - Channel estimation
KW - Delays
KW - Frequency estimation
KW - Frequency modulation
KW - Scattering
KW - Time-frequency analysis
KW - Wireless communication
KW - intelligent reflecting surface
KW - nonlinear wireless propagation.
UR - http://www.scopus.com/inward/record.url?scp=85105851649&partnerID=8YFLogxK
U2 - 10.1109/LWC.2021.3077085
DO - 10.1109/LWC.2021.3077085
M3 - Journal article
SN - 2162-2337
VL - 10
SP - 1672
EP - 1676
JO - I E E E Wireless Communications Letters
JF - I E E E Wireless Communications Letters
IS - 8
M1 - 9420664
ER -