ABSTRACT
As explained in Chapter 5, continuous phase modulation (CPM) is widely used in wireless communication systems, because of the constant envelope of the transmitted signals, which is required for efficient power transmission, and its ability to exploit the diversity of the multipath channel, which is needed to improve the bit error rate (BER) performance. However, CPM signals usually do not provide a high spectral efficiency when compared with non-constant-envelope modulations such as pulse amplitude modulation (PAM) and quadrature amplitude modulation (QAM) [89].
