Patent ID: 9112757
Filing Date: 2015-08-18
Classification: H04L

Abstract:
1. A communication device that communicates with another device in orthogonal frequency-division multiplexing wireless communication, comprising: an identification provider that provides predetermined identification data to an input signal, and generates a first signal; a differential encoder that performs a differential encoding of a data series, that is an aggregate of data having a matching number of elements to that contained in the first signal, and generates a second signal; a modulator that modulates each of the first signal and the second signal using a primary modulation, and generates first modulated data and second modulated data; an IFFT calculator that performs an inverse fast Fourier transformation on each of the first modulated data and the second modulated data, and generates first inverse transformed data and second inverse transformed data; a selector that compares a peak-to-average power ratio calculated by a baseband signal associated with the first inverse transformed data and a peak-to-average power ratio calculated by a baseband signal associated with the second inverse transformed data, and selects a baseband signal having a lower peak-to-average power ratio; and a transmitter that generates a transmission signal based on the selected baseband signal, and transmits the transmission signal.