Method and apparatus to reduce peak to average power ratio in multi-carrier modulation

摘要

A system and method to reduce a ratio between a peak signal power and an average power (PAPR) in a multi-tone communication system. The system includes an encoder configured to receive a plurality of input bits and to generate a plurality of coded symbols based on the plurality of input bits, and a phase shift calculator configured to calculate a plurality of phase shift values for the coded symbols that minimizes the peak to average power ratio. The system further includes an encoding phase shifter coupled to the encoder and the phase shift calculator, configured to receive the phase shift values from the phase shift calculator and configured to phase shift the plurality of coded symbols to generate a plurality of phase shifted symbols.