Fig. 2From: Beamforming design with proactive interference cancelation in MISO interference channelsThe geometrical explanation of problem (19): a \(\sqrt {\lambda _{\text {max}}}|{\mathbf {h}}_{22}^{H}{\mathbf {h}}_{12}|\) ≥∥h 12∥2; b \(|{\mathbf {h}}_{12}^{H}{\mathbf {h}}_{22}|\geq \sqrt {\lambda _{\text {max}}}\|{\mathbf {h}}_{22}\|^{2}\) Back to article page