Communication System Design using M´ary Full and Partial Response Continuous Phase Modulation

Continuous Phase Modulation (CPM), a constant envelope digital signaling technique, provides power efficient and/or bandwidth efficient performance. Practical signal designs are selected by applying a trade-off between error probability performance and receiver complexity for a given occupied bandwidth. An overall system architecture is presented incorporating the maximum likelihood sequence estimation demodulator coupled with phase and clock synchronization. The size and cost of a digital receiver implementation is affected by the sampling rate and number of quantization levels. When applied to CPM waveforms, these implementation parameters lead to reasonable design values with minimal performance degradation. Finally, a hardware architecture is suggested for data rates on the order of megabits per second.