Patent ID: 8670298

Claim:
A method for generating a signal in broadband wireless communications, comprising: modulating, segmenting and serial-parallel converting signal data for transmission, and transforming the serial-parallel converted data to frequency domain in a Discrete Fourier Transformation, DFT, process; block unit modulating and block repeat modulating a data symbol block transformed to the frequency domain, and mapping block units obtained by the block unit modulating and block repeat modulating onto specified time and frequency locations; and transforming the block units mapped onto the time and frequency locations in an Inverse Fast Fourier Transformation, IFFT, process, and appending Cyclic Prefixes, CPs, to the transformed block units to generate a random sequence in time domain, wherein the block unit modulating and block repeat modulating step comprises one of: a) modulating, by a block unit modulation module, the data symbol block transformed to the frequency domain to generate a block unit, wherein an input of the block unit modulation module is connected with an output of a DFT module; and weighting and repeating the generated block unit, by a block repeat modulation module, wherein the block units obtained by the block unit modulating and block repeat modulating are block units obtained from the weighting and repeating, wherein an input of the block repeat module is connected with an output of the block unit modulation module and an output of the block repeat modulation module is connected with an input of an IFFT module, and b) weighing and repeating, by a block repeat modulation module, the data symbol block transformed to the frequency domain, wherein an input of the block repeat module is connected with an output of a DFT module; and modulating, by a block unit modulation module, data symbol blocks obtained from the weighting and repeating to generate block units, wherein the block units obtained by the block unit modulating and block repeat modulating are block units generated from the modulating of the data symbol blocks, wherein an input of the block unit modulation module is connected with an output of the block repeat modulation module and an output of the block unit modulation module is connected with an input of an IFFT module.