Fig. 1
From: Multiple transmit antennas for low PAPR spatial modulation in SC-FDMA: single vs. multiple streams
The block scheme of the proposed SC-FDMA SS-GLPSM transmitter with NT antennas. The input bit sequence is divided into two subsequences. The first is used for QAM/PSK mapping and the second for the selection of the spatial symbol. For each transmit antenna, the QAM/PSK symbol is multiplied with the corresponding GLPSM coding coefficient. After that, independent SC-FDMA modulations are performed for each transmit antenna