Patent ID: 8000228

Claim:
A method for receiving a pilot symbol in an single carrier frequency division multiple access (SC-FDMA) receiver comprising: removing a cyclic prefix from a received pilot waveform to produce a modified pilot waveform; converting the modified pilot waveform into an N-point parallel modified pilot symbol; performing an N-point fast Fourier transform on the N-point parallel modified pilot symbol to produce a received transformed pilot symbol; demapping M distributed subcarriers in the received transformed pilot symbol to produce an M-point received pilot signal; multiplying the M-point received pilot signal by an M-point channel estimate multiplier to produce an M-point intermediate channel estimate, wherein the M-point channel estimate multiplier is derived from a constant-amplitude zero-autocorrelation (CAZAC) sequence; and performing a two dimensional interpolation on the M-point intermediate channel estimate to produce a final channel estimate.