Patent ID: 8090037

Claim:
An orthogonal frequency division multiplexed (“OFDM”) modulator, comprising: a Fourier Transform block coupled to receive first values in the time domain and configured to transform the first values into second values; the second values being in the frequency domain; an up-sampler coupled to receive the second values and configured to up-sample the second values to provide third values; the third values being greater in number than the second values; a multiplier coupled to receive the third values; a shaping filter having a spectrum; the shaping filter coupled to the multiplier; the multiplier configured to multiply the third values with the spectrum to shape and interpolate the third values to provide fourth values; the fourth values being spectral products being shaped responsive to the spectrum of the shaping filter; a first output array coupled to receive the spectral products and configured to provide equalized products; an Inverse Fourier Transform block coupled to the first output array to receive the equalized products and configured to transform the equalized products into fifth values; the fifth values representing modulated OFDM signaling; a second output array coupled to the Inverse Fourier Transform block to receive the fifth values; and a third output array coupled to the second output array to obtain a portion of the fifth values for use as a cyclic prefix and coupled to obtain the fifth values from the second output array.