Abstract
This paper presents a CORDIC (Coordinate Rotation Digital Computer)-based split-radix fast Fourier transform (FFT) core for OFDM systems, for example, Ultra Wide Band (UWB), Asymmetric Digital Subscriber Line (ADSL), Digital Audio Broadcasting (DAB), Digital Video Broadcasting - Terrestrial (DVB-T), Very High Bitrate DSL (VHDSL), and Worldwide Interoperability for Microwave Access (WiMAX). The high-speed 128/256/512/1024/2048/4096/8192-point FFT processor has been implemented by 0.18 @mm (1p6m) at 1.8 V, in which all the control signals are generated internally. This programmable FFT processor outperforms the conventional ones in terms of both power consumption and core area.
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