Method of and apparatus for reducing papr in filter-bank multi-carrier system

A method of reducing Peak-to-Average Power Ratio in a receiving device of a filter-bank multi-carrier system, comprising:

• performing Offset-Quadrature Amplitude Modulation demodulation on a signal after channel equalization;
• performing K-point Inverse Discrete Fourier Transform on the signal after the Offset-Quadrature Amplitude Modulation demodulation;
• and
• performing constellation modulation demodulation on the signal after the Inverse Discrete Fourier Transform,
• wherein the parameter K represents the number of subcarriers allocated for transmission of corresponding data to be transmitted.

An apparatus for reducing Peak-to-Average Power Ratio in a transmitting device of a filter-bank multi-carrier system, comprising:

• a constellation modulation device configured to perform constellation modulation on data to be transmitted;
• a Discrete Fourier Transform device configured to perform K-point Discrete Fourier Transform on a vector composed of K constellation symbols resulting from the constellation modulation;
• and
• an Offset-Quadrature Amplitude Modulation device configured to perform Offset-Quadrature Amplitude Modulation on a data vector resulting from the Discrete Fourier Transform,
• wherein the parameter K represents the number of subcarriers allocated for transmission of the data to be transmitted.

An apparatus for reducing Peak-to-Average Power Ratio in a receiving device of a filter-bank multi-carrier system, comprising:

• an Offset-Quadrature Amplitude Modulation demodulation device configured to perform Offset-Quadrature Amplitude Modulation demodulation on a signal after channel equalization;
• an Inverse Discrete Fourier Transform device configured to perform K-point Inverse Discrete Fourier Transform on the signal after the Offset-Quadrature Amplitude Modulation demodulation;
• and
• a constellation modulation demodulation device configured to perform constellation modulation demodulation on the signal after the Inverse Discrete Fourier Transform,
• wherein the parameter K represents the number of subcarriers allocated for transmission of corresponding data to be transmitted.