A Low-Cost Continuous-Flow Parallel Memory-Based FFT Processor for UWB Applications

作者：Wey Chin Long^*; Lin Shin Yo; Wang Hsu Sheng; Chen Hung Lieh; Huang Chun Ming

来源：IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences, 2011, E94A(1): 315-323.

DOI：10.1587/transfun.E94.A.315

• fast Fourier transform (FFT)
• orthogonal frequency division multiplexing (OFDM)
• ultra-wideband (UWB)
• continuous flow
• parallel architecture

In UWB systems, data symbols are transmitted and received continuously. The Fast Fourier Transform (FFT) processor must be able to seamlessly process input/output data. This paper presents the design and implementation of a continuous data flow parallel memory-based FFT (CF-PMBFFT) processor without the use of input buffer for pre-loading the input data. The processor realizes a memory space of two N-words and multiple processing elements (PEs) to achieve the seamless data flow and meet the design requirement. The circuit has been fabricated in TSMC 0.18 mu m 1P6M CMOS process with the supply voltage of 1.8 V. Measurement results of the test chip shows that the developed CF-PMBFFT processor takes a core area of 1.97 mm(2) with a power consumption of 62.12 mW for a throughput rate of 528 MS/s.

• 出版日期2011-1
• 单位中央民族大学