Systems and methods for reducing the peak-to-average-power ratio in an OFDM-based system

摘要

In an exemplary embodiment, an orthogonal frequency division multiplexing (OFDM) system includes an OFDM transmitter and an OFDM receiver that is configured to receive OFDM signals from the OFDM transmitter over a communication channel. The OFDM signals comprise a plurality of tones including data bearing tones that carry data and reserved tones for generating peak-to-average-power (PAPR) reduction signals. The OFDM system also includes a channel estimation component that is configured to estimate communication channel information for the data bearing tones and also for the reserved tones. The OFDM system also includes a tone selection component that is configured to determine tone selection information based on the estimated communication channel information.