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International Journal of High Performance Systems Architecture

 

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International Journal of High Performance Systems Architecture (1 paper in press)

 

Regular Issues

 

  • A VLSI Architecture of CORDIC based Popular Windows and Its FPGA Prototype   Order a copy of this article
    by VIKAS KUMAR, Kailash Chandra Ray, Preetam Kumar 
    Abstract: Popular window technique such as Hamming, Hanning, Blackman, Blackman - Harris and Flat Top windows are an obvious choice before Fast Fourier Transform(FFT) in the domain of signal processing, communication system and image processing to minimize the undesirable phenomenon i.e. spectral leakage and picket fence effect arise due to direct truncation by rectangular window. As the window characteristics depends upon the type of the function and length of window used, hence this is necessary to choose a particular window function and window length depending upon the applications. In other hand, real time implementation of window function demands efficient and flexible VLSI architecture. Hence this paper presents a new hardware efficient CORDIC based VLSI architecture which is capable of reconfigurability to choose a window function among aforesaid popular window functions and window length ranging from 8 to 32K, depending upon the application. Further this proposed architecture is prototyped on FPGA for real time validation and implementation results have been highlighted along with error analysis.
    Keywords: CORDIC; Flat Top Window; Blackman-Harris Window; Blackman Window; Hamming Window; Hanning Window; FFT; FPGA; Signal Processing.ORDIC; Flat Top Window; Blackman-Harris Window; Blackman Window; Hamming Window; Hanning Window; FFT; FPGA; Signal Processing.C.