| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for rotating the phase of a complex PSK signal. <P>SOLUTION: In applications employing phase-shift keying modulation, phase rotators (200, 202) as disclosed herein are used to rotate the constellation of signal vectors before carrier modulation in order to maximize modulator output power. The rotators (200, 202) may be applied in the digital domain (to complex signals having either binary-valued or multi-valued components) or in the analog domain. <P>COPYRIGHT: (C)2012,JPO&INPIT |
