| 摘要 |
Apparatus, system and method relates generally to data communication with noise-shaping crest factor reduction using polyphase transformation. In such a method, a composite signal (101) is received by a delay (103) and a waveform generator (104). The waveform generator (104) is for noise-shaping crest factor reduction using polyphase transformation. The composite signal (101) is delayed by the delay (103) to provide a delayed composite signal (101 D). A waveform (117) is generated by the waveform generator (104) from the composite signal (101). The waveform (117) is output from the waveform generator (104) having clipping noise (111) with respect to bands of corresponding carriers (106) of the composite signal (101). The waveform (117) is subtracted from the delayed version of the composite signal (101 D) for peak-to-amplitude power ratio reduction. A reduced peak (or PAPR) version (102) of the delayed version (101 D) of the composite signal (101) delayed is output from the signal combiner (105). |
