On the Effects of CW Interference on MSK Signal Reception

The probability of error in a minimum (frequency)-shift keying (MSK) system is obtained for the case of Gaussian noise only and for the case of CW interference in addition to Gaussian noise. Analysis is made for the fading channel case assuming Rayleigh fading. The results are compared with those of BPSK. It is found that MSK is more immune to CW interference than BPSK.