Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Multiple-Clock-Cycle Architecture for the VLSI Design of a System for Time-Frequency Analysis | Hindawi Publishing Corporation EURASIP Journal on Applied Signal Processing Volume 2006 Article ID 60613 Pages 1-18 DOI ASP 2006 60613 Multiple-Clock-Cycle Architecture for the VLSI Design of a System for Time-Frequency Analysis Veselin N. Ivanovic Radovan Stojanovic and LJubisa Stankovic Department of Electrical Engineering University of Montenegro 81000 Podgorica Montenegro Yugoslavia Received 29 September 2004 Revised 17 March 2005 Accepted 25 May 2005 Multiple-clock-cycle implementation MCI of a flexible system for time-frequency TF signal analysis is presented. Some very important and frequently used time-frequency distributions TFDs can be realized by using the proposed architecture i the spectrogram SPEC and the pseudo-Wigner distribution WD as the oldest and the most important tools used in TF signal analysis ii the S-method SM with various convolution window widths as intensively used reduced interference TFD. This architecture is based on the short-time Fourier transformation STFT realization in the first clock cycle. It allows the mentioned TFDs to take different numbers of clock cycles and to share functional units within their execution. These abilities represent the major advantages of multicycle design and they help reduce both hardware complexity and cost. The designed hardware is suitable for a wide range of applications because it allows sharing in simultaneous realizations of the higher-order TFDs. Also it can be accommodated for the implementation of the SM with signal-dependent convolution window width. In order to verily the results on real devices proposed architecture has been implemented with a field programmable gate array FPGA chips. Also at the implementation silicon level it has been compared with the single-cycle implementation SCI architecture. Copyright 2006 Hindawi Publishing Corporation. All rights reserved. 1. INTRODUCTION AND PROBLEM FORMULATION The most important and commonly used methods in TF signal analysis the SPEC .
