EM-telemetry remote sensing wireless network and methods of using the same

An EM-telemetry remote sensing wireless system comprising:

• a plurality of downhole tools in a drilling area comprising a formation, the plurality of tools including a first tool operating in a first wellbore and a second tool operating in a second wellbore, each said tool transmitting a modulated current into the formation and generating an electromagnetic signal at earth's surface, the signal comprising a signal component from the tool and noise component from the area;
• an array of electrodes at the earth's surface comprising a plurality of nodes, each said node having corresponding first and second electrodes to receive the signal, wherein the signal is received as a voltage difference between the first and second electrodes in each node;
• a noise reduction manager configured to (i) receive the signal from the array of electrodes, (ii) convert the signal into symbols in a constellation domain, (iii) evaluate a dispersion of the symbols in the constellation domain, (iv) determine a de-mixing vector based on the dispersion evaluated in (iii), and (v) apply the de-mixing vector to compute denoised symbols, thereby filtering the noise component of the signal and increasing a signal to noise ratio;
• and
• an acquisition system located on Earth's surface wirelessly receiving the signal from the node.