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Table 1 Computational complexity of all schemes

From: Joint distributed beamforming and jamming schemes in decode-and-forward relay networks for physical layer secrecy

Scheme

Complexity

Optimal

\(\mathcal {O}\left (44N^{2}\right)+\mathcal {O}(N^{3})+\mathcal {O}\left (L\left ((N+1)^{0.5}\left (2(N+1)^{3}\right.\right.\right.\) +4(N+1)2+8))) log(1/ε)

w R h re

\(\mathcal {O}(M^{2})\)

w R h rd

\(\mathcal {O} \left (L_{p}M^{2}\right)+ \mathcal {O}\left (44L_{p}K^{2}\right)+\mathcal {O}(L_{p}K^{3})\) \(+\mathcal {O}\left (L_{p}L((K+1)^{0.5}(2(K+1)^{3}+4(K+1)^{2}+8)\log (1/\epsilon))\right)\)

w J h jd

\(\mathcal {O}\left (L_{p}K^{2}\right)+\mathcal {O}\left (22L_{p} M^{2}\right)\)

w J h je

\(\mathcal {O}\left (L_{p} K^{2}\right)+\mathcal {O}\left (22L_{p} M^{2} \right)\)