FPGA Implementation of IFFT-2048 Points for High Speed Transmitter OFDM Communication Systems with 64-QAM Mapping

High-speed wireless broadband technology mostly uses the modulation technology of orthogonal frequency division multiplexing (OFDM) modulation format. This work presents a field programable gate array (FPGA) implementation of invert fast Fourier transform (IFFT) for OFDM with 64-QAM for WiMAX high-speed communication systems. The bandwidth of 400 MHz is considered. As a result, a 2.4Gbps (=6 bits x 400) speed rate can be achieved. A 2k (2048) according to the standard is used. Additionally, the efficient parallel Radix-2 computation algorithm is proposed. The proposed implemented Zynq UltraScale+ RFSoC board from AMD-Xilinx using vivado program version 2020. The process latency is 22,860 ns. The implementation results showed that the implementation is correct and that it achieves the expected performance. The resource consumption is only 7%. The number used as Memory is only 0.74%. The work can be adapted to implement a higher number point of samples in the IFFT algorithms.