Uncorrelated

Uncorrelated but overlapping spectrum.

Uncorrelated but overlapping spectrum.
  1. What is an uncorrelated signal?
  2. What are required to avoid frequency overlapping?

What is an uncorrelated signal?

Two signals which have no covariance are called uncorrelated (the correlation is the covariance normalized to lie between -1 and 1). In general, for two uncorrelated signals, the power of the sum is the sum of the powers: Put in terms of amplitude, this becomes: This is the familiar Pythagorean relation.

What are required to avoid frequency overlapping?

In order to avoid this, a receiver with directional antenna is used, which can then be aligned in such a way that it will only receive the signal of one transmitter. Alternatively, the signals could be separated using a demodulator in single sideband mode.

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