The immunity of non-coherent and coherent reception of a signal DQPSK in the conditions of influence of PSK, a harmonic interference or Gaussian noise

By the method of making the indicators of output elements obtained according to the average probability of correct reception in optimum incoherent receiving-solver symbol and binary element no fading DQPSK signal when exposed to PSK or harmonic interference from the signal-to-noise ratio. The analysis of these dependencies and comparison of optimal noise immunity of incoherent and coherent of receivers with DQPSK signal with PSK, a harmonic interference and Gaussian noise.