Instantaneous CFAR algorithm (spread spectrum receivers)

For practical realizations of spread-spectrum receivers, automatic threshold level control (ATLC) in synchronization schemes is crucial. A novel ATLC system is described and analyzed. The system uses a fixed threshold which provides a constant false alarm rate (CFAR) independent of signal to noise ratio variations that may be generated due to impulse noise. The in sync./out of sync. decision variable is formed by using the ratio of the correlation functions of the input signal and two mutually delayed pseudo-noise sequences. Numerical results of the system performance analysis are presented and discussed.<
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