| 摘要 |
<p>To reflect advantages of a constant phase modulation waveform, the invention provides a pulse amplitude modulated PAM waveform that is a superposition of Qoa??ñ2<sup>L-1</sup> PAM component pulses in each symbol interval such that a significant portion of signal energy over each symbol interval is within the Q<sub>0</sub> PAM component pulses. The present invention distributes most signal energy in one pulse and progressively lower energies in the remaining Q<sub>0</sub>-I pulses of a symbol interval. The Laurent Decomposition is a special case of the present invention, but the present invention exhibits the energy distribution of the Laurent Decomposition in non-binary CPM waveforms and in m??lti-h (binary and non- binary) CPM waveforms, where <i>h</i> is a modulating index. AU energy is distributed among only Q=2 <sup>L-1</sup> pulses in each symbol interval, though only Q<sub>0</sub><Q pulses may in fact be transmitted in certain embodiments. A method, transmitter, receiver, and computer program are disclosed. Embodiments may exactly duplicate a CPM waveform, or approximate a CPM- waveform.</p> |
