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 3

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° and 60° by using 4 elements.

Algorithm	Weights	Power at 0° (W)	Power at 20° (W)	Power at 60° (W)	SINR (dB)
LCMV	0.0067 − 0.7860i; −1.7890 − 1.6179i; −1.7888 + 1.6184i; 0.0069 + 0.7860i	3.56	1.5×10^−1	1.14×10^0	4.40
PSO	0.2620 + 1.0535i; 0.1924 + 0.6244i; 0.5209 + 0.8704i; 1.3205 + 0.3789i	3.72	8.69×10^−6	1.54×10^−7	56.18
DM-AIS	0.7471 + 1.2004i; 0.4117 + 0.5250i; 0.7398 + 0.8941i; 1.7452 + 0.1232i	4.56	9.44×10^−8	3.96×10^−8	72.89
GSA	−4.1832 − 1.6647i; −2.5456 + 0.9557i; −1.8412 + 0.4129i; −3.3839 + 2.0752i	12.08	1.78×10^−9	2.18×10^−9	80.65