Design of OFDM Transceiver using Mixed Radix 8-2 Algorithm

Abstract: Orthogonal Frequency Division Multiplexing (OFDM) is a Frequency Division Multiplexing (FDM) technique used as a digital multi-carrier modulation method. OFDM uses the spectrum efficiently compared to Frequency Division Multiple Access (FDMA) by spacing the channels much closer and creating all the carriers orthogonal to one another. The Existing system, may fail to support high speed efficient data transmission. To improve the speed and maximum amount of data transmission OFDM system may be used. Orthogonality of the carriers prevents interference between the closely spaced carriers and provides high bandwidth efficiency. This work focuses on design and implementation of OFDM transmitter and receiver using the mixed radix8-2 algorithm The design has been coded in VERILOG. Timing simulation is analyzed using Xilinx ISE 13.1.

Keywords: OFDM, IFFT, FFT, ICI.