Fig. 9From: Secure massive MIMO system with two-way relay cooperative transmission in 6G networksSecrecy sum-rate in different \(p_{BS}\) and \(K\) with \(p_{u} = 30{\text{dBm}}\) and \(p_{\max } = 30{\text{dBm}}\). Blue line: \(K = 1\); green line: \(K = 3\); yellow line: \(K = 10\); pink line: \(K = 20\)Back to article page