Design and Analysis of a Multiple and Wide Nulling Collaborative Beamforming Scheme in the Domain of 3-Dimensional Wireless Sensor Networks

Table 7

Null depth (in dB) corresponding to null steering using 20, 15, 10, and 5 nodes. SD denotes standard deviation.

	20 nodes		15 nodes		10 nodes		5 nodes
	Depth	SD	Depth	SD	Depth	SD	Depth	SD
Null 1	−29.23	1.04	−26.42	1.08	−24.71	1.12	−19.61	1.21
Null 2	−28.92	1.13	−29.37	1.13	−27.70	1.25	−15.94	1.29
Null 3	−35.26	1.26	−29.98	1.07	−26.32	1.18	−12.56	1.33
Average	−31.14		−28.59		−26.24		−16.04