Search

Your search keyword '"CORDIC"' showing total 3 results
Start Over Descriptor "CORDIC" Language turkish
3 results on '"CORDIC"'

1. Jenerik Cordic algoritmasının FPGA’da donanımsal gerçeklenmesi.

Author

Şahin, Suhap and Savaş, Burcu Kır

Subjects
*CORDIC algorithm, *FIELD programmable gate arrays, *MATHEMATICAL functions software
Abstract

Trigonometric, exponential, logarithmic, hyperbolic and several other mathematical functions, are frequently used in hardware implementation applications. CORDIC algorithm, which is a widely used method for hardware implementation of these functions due to its efficient space utilization and low power consumption. In this study, FPGA hardware implementation of rotation angle conversion and circular vector mode CORDIC algorithm for signal processing applications is described. The resulting mean squared error values are provided with respect to different data lengths and different iterations. In this study, the target implmentation platform is Xilinx Artix-7 FPGA platform. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

2. Logaritmik ve üstel fonksiyon hesaplamaları için bütünleşik yenilikçi donanım mimarisi geliştirilmesi

Author

Helvacıoğlu, Gülfem, Kasnakoğlu, Coşku, Elektrik-Elektronik Mühendisliği Ana Bilim Dalı, TOBB Ekonomi ve Teknoloji Üniversitesi Fen Bilimleri Enstitüsü, Elektrik ve Elektronik Mühendisliği Lisansüstü Programı, and TOBB University of Economics and Technology Graduate School of Engineering and Science, Electrical and Electronics Engineering Graduate Programs

Subjects
Signal processing, CORDİC, Elektrik ve Elektronik Mühendisliği, Sinyal işleme, Logarithm, Logaritma, FPGA, Electrical and Electronics Engineering
Abstract

Bu çalışmada, belirli bir tabanda logaritma hesaplaması yapan İndirgemeli CORDIC Tabanlı Logaritma Çeviricisi (İCTLÇ) metodu tanıtılmış ve İCTLÇ'nin FPGA(Field-Programmable-Gate-Array) tabanlı donanım mimarisi ayrıntıları ile anlatılmıştır. İCTLÇ çok düşük kaynak kullanımı ile yüksek bit hassasiyetinde logaritma hesaplarını karmaşık olmayan bir donanım mimarisi ile yapabilmektedir. Toplama ve bit kaydırma işlemlerini barındıran CORDIC metodunun yanında hızlı bir sayı indirgeme yöntemi kullanarak çok geniş aralıktaki sayıların logaritmik çevrimini diğer metotlara kıyasla daha yüksek hassasiyetle ve az kaynak kullanımı ile mümkün kılmaktadır. İçerisinde bulundurduğu indirgeme metodu ile de aynı mimari ile geniş bir operasyon değer aralığı sunmaktadır., In this work, a novel method Reduced CORDIC Based Logarithm Converter (RCBLC) is introduced for computing the specific-based logarithm of the binary values, and then the hardware architecture of RCBLC based on FPGA is analyzed in detail. Hardware architecture of RCBLC is implemented such that it enables logarithm conversion with both high output bit-sensitivity and low resource utilization. In addition to CORDIC method which includes only add-and-shift operations, using the rapid value reduction method provides an opportunity for calculating logarithm of a value more precise and lower resource utilization comparing to other methods. Thanks to the reduction method in it, RCBLC can provide wide operating input interval for logarithm conversion. Keywords: Logarithm, FPGA, CORDIC, Signal processing

Published
2017

3. Comparison of number formats on FPGA-based OFDM modem architecture [FPGA tabanli OFDM modem mimarisi üzerinde sayi formatlarinin karŞilaŞtirilmasi]

Author

Şahin S., Kavak A., ÇavuŞlu M.A., 0-Belirlenecek, and Şahin, S., Bilgisayar Mühendisligi Bölümü, Kocaeli Üniversitesi, Kocaeli, Turkey -- Kavak, A., Bilgisayar Mühendisligi Bölümü, Kocaeli Üniversitesi, Kocaeli, Turkey -- ÇavuŞlu, M.A., Fen Bilimleri Enstitüsü Elektrik-Elektronik Mü hendisligi, Nigde Üniversitesi, Nigde, Turkey

Subjects
IFFT, Wireless systems, WIMAX, VHDL, CORDIC, DSP, FPGA, FFT, OFDM
Abstract

2013 21st Signal Processing and Communications Applications Conference, SIU 2013 -- 24 April 2013 through 26 April 2013 -- Haspolat -- 98109, It is preferable for wireless operators to use the existing infrastructure as possible for different services such as GSM, 3G and Wimax. This becomes possible with the development of software defined base stations. But, to obtain desired performance and flexibility in signal processing at software defined base stations needs to be implemented instead of traditional processors and ASIC modem on programmable processors. The purpose of this thesis is implementing of the OFDM modem architecture on FPGA by using IEEE-754 floating point and IQ-Math fixed point number format. Two different OFDM modem design implemented by using IEEE-754 and IQ-Math, compared with basis of the usage of FPGA hardware resources, design clock frequency and the sensitivity of number formats criteria. © 2013 IEEE.

Published
2013

Catalog

Books, media, physical & digital resources
See catalog results