Secure Channel Estimation Architecture

A method comprising:

• receiving, via a receiver system, a first wireless signal from a first electronic device and a second wireless signal from a second electronic device, wherein the first wireless signal comprises a first preamble and a cryptographically secure value and the second wireless signal comprises a second preamble;
• filtering, via the receiver system, the second wireless signal from the first wireless signal;
• and
• estimating, via processing circuitry, a wireless channel of a shortest free-space path based at least in part on filtering the second wireless signal from the first wireless signal.

One or more tangible, non-transitory, machine-readable media comprising instructions that, when executed by one or more processors of the machine, cause the machine to:

• receive a plurality of wireless signals, each of the plurality of wireless signals comprising a preamble and a secure value;
• compare the preamble of each of the plurality of wireless signals with a stored secure value;
• filter one or more wireless signals of the plurality of wireless signals from the plurality of wireless signals based on one or more mismatches between the secure value of each of the one or more wireless signals and the stored secure value;
• and
• determine an earliest channel using the preamble of remaining one or more wireless signals of the plurality of wireless signals.