Null Steering of Adaptive Beamforming Using Linear Constraint Minimum Variance Assisted by Particle Swarm Optimization, Dynamic Mutated Artificial Immune System, and Gravitational Search Algorithm

Table 4

Comparison of weight vectors, power values, and SINR calculation for conventional LCMV, PSO-LCMV, DM-AIS-LCMV, and GSA-LCMV for user at 0° with interference at 20° by using 8 elements.

Algorithm	Weights	Power at 0° (W)	Power at 20° (W)	SINR (dB)
LCMV	0.0317 + 0.1445i; 0.1194 + 0.0909i; −0.2264 + 0.1311i; 0.0990 − 0.2212i; 0.1017 + 0.2525i; −0.1896 − 0.12725i; 0.1060 − 0.1115i; 0.0227 − 0.1350i	6.90×10^−2	8.71×10^−6	38.93
PSO	0.0317 + 0.1445i; 0.1194 + 0.0909i; −0.2263 + 0.1311i; 0.0990 − 0.2212i; 0.1017 + 0.2525i; −0.1897 − 0.1271i; 0.1061 − 0.1115i; 0.0227 − 0.1349i	6.92×10^−2	2.23×10^−9	58.30
DM-AIS	−0.0864 + 0.7410i; 0.9922 + 0.1975i; 1.6119 + 0.4745i; 0.1607 + 0.5461i; 1.3573 + 0.2932i; −0.1193 + 0.6657i; 0.9244 + 0.7284i; 0.0049 + 0.5399i	6.40×10^0	1.11×10^−6	67.20
GSA	−0.6737 + 0.8571i; 0.6194 − 0.0643i; 1.3861 + 0.6505i; 0.8473 + 0.8198i; 1.1431 + 0.9980i; 1.5379 + 1.0542i; 1.8363 + 0.9692i; 1.3944 + 0.42148i	9.90×10^0	6.30×10^−10	79.92