Design and FPGA Implementation of a Low Power OFDM Transmitter for Narrow-Band IoT

5G technology is now globally widespread. One of the most interesting applications that this technology offers concerns the "Internet of Things", better known as IoT which gave birth to several new technologies such as the Narrow-Band IoT (NB-IoT). These technologies provide a communication standard for wide areas and its main feature is low power consumption. In this paper the design and the FPGA implementation of a low-power OFDM transmitter for NB-IoT applications is proposed. It is mainly composed of a QPSK Mapper, a 12-points IFFT and a Cyclic Prefix Module. The whole developed system has been implemented on a Xilinx Spartan-7 device and it has been characterized in terms of hardware resources, timing, and power consumption.