Patent ID: 7924699

Claim:
An apparatus for generating a vector of digital signal samples (S), the apparatus comprising: means for processing; and means for storing coupled to the means for processing, the means for storing including a set of instructions stored therein and executable by the means for processing to receive a discrete signal of complex data symbols (C), calculate frequency responses (A 1 , . . . A M ) corresponding to tones (f (1) , . . . f (M) ), through an M-point discrete Fourier transform (DFT), and output a vector [A 1 , . . . A M ] of length M, expand the vector [A 1 , . . . A M ] to a new vector of length N, and insert zero-value symbols corresponding to tones other than tones allocated to a transmitter, and perform an N-point inverse discrete Fourier transform (IDFT) operation on the new vector after zero insertion to obtain the vector of digital signal samples (S), and generate a low peak-to-average OFDM-based signal using the vector of digital signal samples (S) for transmission.