Method and device for forming dft-spread ofdm symbol including data and pilots

A device for forming a DFT-spread OFDM symbol including data and pilots, comprising:

• a processor to execute a program and
• a memory to store the program which, when executed by the processor, performs processes of
• forming a pilot symbol in the time domain, the pilot symbol comprising at least two parts, a first part of the pilot symbol comprising front pilots, a second part of the pilot symbol comprising null values and being consecutive to the first part of the pilot symbol,
• performing a DFT-spread OFDM modulation of the pilot symbol,
• precoding the data in order to compensate a modification of the data contribution onto a part of the DFT-spread OFDM modulated data symbol corresponding to the first part of the data symbol prior to the DFT-spread OFDM modulation,
• putting the precoded data under the form of a data symbol in the time domain, the data symbol comprising at least two parts, a first part of the data symbol comprising null values, a second part of the data symbol comprising the data, the second part of the data symbol being consecutive to the first part of the data symbol,
• performing a DFT-spread OFDM modulation of the data symbol,
• modifying the part of the DFT-spread OFDM modulated data symbol corresponding to the first part of the data symbol prior to the DFT-spread OFDM modulation in order to form a DFT-spread OFDM modulated data symbol to be combined,
• combining the DFT-spread OFDM modulated data symbol to be combined to the DFT-spread OFDM modulated pilot symbol in order to form a full DFT-spread OFDM symbol.