Rayleigh Fading Modeling and Channel Hardening for Reconfigurable Intelligent Surfaces

• A realistic performance assessment of any wireless technology requires the use of a channel model that reflects its main characteristics. The independent and identically distributed Rayleigh fading channel model has been (and still is) the basis of most theoretical research on multiple antenna technologies in scattering environments. This letter shows that such a model is not physically appearing when using a reconfigurable intelligent surface (RIS) with rectangular geometry and provides an alternative physically feasible Rayleigh fading model that can be used as a baseline when evaluating RIS-aided communications. The model is used to revisit the basic RIS properties, e.g., the rank of spatial correlation matrices and channel hardening.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)

Nyckelord

channel hardening

channel modeling

Correlation

Eigenvalues and eigenfunctions

Geometry

isotropic scattering

Rayleigh channels

Receivers

Reconfigurable intelligent surface

Scattering

spatial correlation.

Transmitters

Antennas

Fading channels

Hardening

Interlocking signals

Multiple-antenna technology

Performance assessment

Rayleigh fading channel modeling

Rayleigh fading model

Rectangular geometry

Scattering environment

Theoretical research

Wireless technologies

Rayleigh fading

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)