The design and implementation of FFT/IFFT processor for MB-OFDM UWB
Lufeng Qiao · Journal of Circuits and Systems · 2012
A FFT/IFFT processor used in ultra-wideband(UWB) system is presented.The processor is based on the FFT algorithm and can simultaneously deal with data of 8 data path,which can provide a higher throughput and lower power dissipation.A new data structure is proposed to reduce the logic resources while the signal-noise-ratio(SNR) can satisfy the UWB system.The multipliers of the FFT/IFFT processor are improved and optimized in the structure to update the performance based on the characteristics of the UWB system.The FFT/IFFT processor is synthesized in TSMC 0.18μm technology with Synopsys's Design Complier,The core area is 0.762mm2(excluding the test module).Under 1.8V supply and 25℃ condition,the maximum working frequency is 317.199MHz,the power dissipation is 33.5304mW in typical mode.