Table 2 Simulation parameters

RIS central element placement

(\(d_{0}\),30m)

DFRC-BS element placement

(0,0)

Small-scale fading model for all channels

\(\in \mathcal{C}\mathcal{N}(0,1)\)

Large-scale fading model at distance d

\(\frac{10^{-3.53}}{d^{3.76}}\)

Transmission bandwidth B

15 MHz

Algorithmic convergence parameter \(\epsilon\)

\(10^{-4}\)

DC power consumption for each active RE \(P_{DC}\)

\(-8\) dBm

Active RIS dynamic noise power

\(-134\) dBm

Circuit dissipated power at DFRC-BS \(P_{BS}\)

1.5 dBW

Circuit dissipated power coefficients at DFRC-BS \(\xi\)

1.25

Maximum transmit power at DFRC-BS \(P_\mathrm{max}\)

4.0 dBW

Dissipated power at each user \(P_{UE,k}\)

10 dBm

Dissipated power for active and passive RIS element

10 and 8 dBm

Power of background noises at users and RIS \(\sigma ^{2} = \sigma ^{2}_\mathrm{RIS}\)

\(-80\) dBm

The maximum active RIS power budget

\(10\%\) \(P_\mathrm{max}\)

Circuit dissipated power coefficients at the RIS \(\xi _\mathrm{RIS, a}\)

1.25