Table 1 Parameters.

From: Receiver aperture and multipath effects on power loss and modal crosstalk in a THz wireless link using orbital-angular-momentum multiplexing

f

Carrier frequency of the transmitted beam

w0

Beam waist of the transmitted beam

r

The radius of the transmitter and receiver aperture

ℓ

Azimuthal LG modal indices

p

Radial LG modal indices

h

Reflector distance

L

Propagation distance

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