Coded partial response CPFSK with ring convolutional codes

In this paper a combination of the convolutional encoder over ring and the modulator for a partial response continuous phase frequency shift keying (PR-CPFSK) signal is described. The examples of the convolutional encoders over ring connected with modulator for the partial response 8-ary CPFSK signal with modulation index h=1/8 that have interesting properties are presented.