Patent ID: 8891662
Filing Date: 2014-11-18
Classification: H04L

Abstract:
1. A data transmission apparatus, comprising: a discrete Fourier transform (DFT) precoder to perform a DFT with respect to N data symbols, wherein the DFT precoder comprises: a multiplexer to generate a reference orthogonal frequency division multiplexing (OFDM) symbol by multiplexing N reference symbols into subcarriers containing the N inserted zeroes and performing a frequency division multiplexing (FDM) with respect to the discrete Fourier transformed N data symbols and the multiplexed N reference symbols, wherein the multiplexer alternately multiplexes the discrete Fourier transformed N data symbols and the N reference symbols; an inverse fast Fourier transform (IFFT) unit to perform an IFFT with respect to the reference OFDM symbol; and a transmitter to transmit the inverse fast Fourier transformed reference OFDM symbol to a data reception apparatus.