Biological Measurement Systems and Methods

An apparatus comprising:

• an analog receiver system configured to receive a communication signal comprised of a first composite chaotic communication signal and a second composite chaotic communication signal, wherein each of the first composite chaotic communication signal and the second chaotic communication signal is further comprised of at least two distinct chaotic communication waveforms;
• an analog-to-digital converter (ADC) configured to digitize the received communication signal;
• and
• a processing system configured to receive the digitized communication signal and:
• demodulate the first composite chaotic communication signal to extract a first measurement of a biological function;
• demodulate the second composite chaotic communication signal to extract a second measurement of the biological function;
• and
• use the first measurement as a reference measurement and perform an interpolation between two or more datapoints of the second measurement to derive a third measurement that is substantially time-synchronized with the first measurement, with the time synchronization being referenced to a clock signal.