| 摘要 |
A method and transmitter for reducing peak-to-average power ratio in an orthogonal frequency division multiplexed signal (OFDM) are provided. The method comprises the steps of modulating a set of subcarriers with a set of data symbol vectors to produce a first modulated signal, limiting the magnitude of the first modulated signal to produce a first limited modulated signal, demodulating the first limited modulated signal to recover distorted input symbol vectors, constraining the distorted input symbol vectors to values greater than or equal to a minimum threshold value to produce constrained data symbol vectors, constraining out-of-band spectral components to lie within a predetermined mask by suppressing their magnitude and preserving their phase, and remodulating the constrained data symbol vectors.
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