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 5

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°, 60° by using 8 elements.

Algorithm	Weights	Power at 0° (W)	Power at 20° (W)	Power at 60° (W)	SINR (dB)
LCMV	−0.6890 + 0.4136i; 0.2415 + 1.1050i; −0.6307 − 0.3236i; −0.2050 + 0.4525i; −0.1819 − 0.4779i; −0.5573 + 0.2462i; 0.2360 − 1.2187i; −0.7214 − 0.4358i	2.51	2.98×10^−5	7.66×10^−5	43.73
PSO	−0.6004 + 0.5241i; 0.2293 + 1.1021i; −0.5799 − 0.3262i; −0.5170 + 0.9217i; −0.1831 − 0.3784i; −1.0433 + 0.2464i; 0.0982 − 0.3784i; −0.6887 − 0.3784i	3.54	1×10^−15	1×10^−15	75.49
DM-AIS	−0.4890 + 0.5137i; −0.2718 + 0.6251i; 0.0371 + 0.4669i; 0.2083 + 0.6415i; −0.6586 + 0.7074i; −0.1554 + 0.7897i; 0.3603 + 0.5786i; 0.3198 + 0.5346i	4.90	1.70×10^−9	1.79×10^−9	76.75
GSA	−0.3417 + 0.1177i; 0.1586 + 1.0271i; 1.1506 + 0.3389i; 1.8499 + 0.6928i; 1.5246 + 1.0174i; 0.7917 + 0.3530i; 1.5273 + 0.7368i; 1.4564 + 0.8934i	9.62	2.64×10^−9	6.36×10^−10	79.69