Patent ID: 9485063
Filing Date: 2016-11-01
CPC Classification: H04B,H04J,H04L,H04W

Claim Text:
1. An OFDM transmitter, comprising: an OFDM spreader configured to spread a plurality of reference-signal symbols with Fourier coefficients to generate a Discreet Fourier Transform (DFT)-spread reference signal; a mapper configured to map the DFT-spread reference signal to a plurality of OFDM subcarriers; and an OFDM modulator configured to modulate the DFT-spread reference signal onto the plurality of OFDM subcarriers to produce an OFDM transmission signal, wherein the OFDM transmission signal comprises a superposition of the OFDM subcarriers, and wherein the OFDM spreader is configured to provide the superposition with at least one predetermined time-domain signal characteristic comprising at least one of a plurality of uniformly spaced pulse waveforms and a signal with low peak-to-average power ratio.