Symbols incorporation scheme for DFT-S-OFDM

A device for transmitting at least a group of Q symbols (A0;

• . . . ;
• AQ−1) in a radio signal to be transmitted over a wireless communication system, said radio signal being intended to be emitted by an emitter comprising at least one transmit antenna configured for transmitting on at least a number M, of different frequencies, M being equal to L·K with L and K strictly positive integer and Q being a strictly positive integer strictly smaller than L, said radio signal being provided by:
• applying a M size DFT to a block of symbols X=(X0, . . . XM−1), and obtaining for each kth frequency, with k=0 to M−1, a complex symbol Sk in the frequency domain;
• obtaining, at an output of an IDFT module corresponding to a transmit antenna a signal representing, in the frequency domain, complex symbols respectively function of Sk for each kth frequency with k=0 to M−1;
• emitting the radio signal corresponding to the signal;
• said device being configured to:
• determine Q positions ni, in the block of symbols, such as {ni|i∈0;Q−1, 0≤ni<L, ∀i, i′∈0;Q−12, i<i′ni<ni′};
• transmitting the Q symbols through the radio signal, such as for each i, samples of the symbol ai in the radio signal are equal to a result outputted by the IDFT module, of the application of the DFT to a block of M symbols with values of symbols Xni+mL, in the positions ni+mL, being respectively ej2πk(ni+mL)/MAi, with k integer such as 0≤k<K, with m integer such as 0≤m<K, and j the imaginary number.