CFP last date
20 December 2024
Call for Paper
January Edition
IJCA solicits high quality original research papers for the upcoming January edition of the journal. The last date of research paper submission is 20 December 2024

Submit your paper
Know more
The week's pick
Responsive image
Improved Shuffled Frog Leaping Algorithm with Self-Adaptive Shuffling for Fuzzy Logic PD+G Controller Optimization in Robotic Manipulators

Duc Hoang Nguyen
Random Articles
Reseach Article

Implementation of Generalized Discrete Fourier Transform for CDMA on Real Time System

by Umesh Sakhare
journal cover thumbnail

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 90 - Number 14
Year of Publication: 2014
Authors: Umesh Sakhare
10.5120/15786-4467

Umesh Sakhare . Implementation of Generalized Discrete Fourier Transform for CDMA on Real Time System. International Journal of Computer Applications. 90, 14 ( March 2014), 7-11. DOI=10.5120/15786-4467

@article{ 10.5120/15786-4467,
author = { Umesh Sakhare },
title = { Implementation of Generalized Discrete Fourier Transform for CDMA on Real Time System },
journal = { International Journal of Computer Applications },
issue_date = { March 2014 },
volume = { 90 },
number = { 14 },
month = { March },
year = { 2014 },
issn = { 0975-8887 },
pages = { 7-11 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume90/number14/15786-4467/ },
doi = { 10.5120/15786-4467 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:11:01.231998+05:30
%A Umesh Sakhare
%T Implementation of Generalized Discrete Fourier Transform for CDMA on Real Time System
%J International Journal of Computer Applications
%@ 0975-8887
%V 90
%N 14
%P 7-11
%D 2014
%I Foundation of Computer Science (FCS), NY, USA
Abstract

This paper deals with simulation of Generalized Discrete Fourier Transform spreading codes used in modulation technique in Code Division Multiple Access on real time system using MATLAB environment. Binary sequences can be used as various spreading code in digital modulation technique. The spreading codes are used to increase the spread spectrum and proper utilization of the spread spectrum in cellular communication system. In CDMA for digital modulation technique various spreading codes like Gold codes, M-ary Binary sequences, Walsh codes and Constant modulus function set (GDFT) are used. These codes can be used in various applications like Orthogonal Frequency Division Multiple Access (OFDM), Discrete Multi-tone and Code Division Multiple Access. This paper proposes real time system model in which GDFT spreading code modulated with voice or speech as input analog signal. Performance of Generalized Discrete fourier transform with non linear phase is been determined by some factors. The factors are Bit-Error-Rate, Signal-to-Noise ratio and Mean Square Value of auto-correlation and Mean Square Value of Cross-Correlation responsible to maintain quality of services in digital modulation.

References
  1. Vaishali Patil, Jaikaran Singh, Mukesh Tiwari "Simulation of GDFT for CDMA", MPGI National Muti-Conference 2012.
  2. Ali N. Akanshu, Handan Agirman "Generalized Discrete Fourier Transform", IEEE Transaction on Signal Processing, vol 58, N0. 9, Septmber 2010.
  3. T. M. Nazmul Huda, Syed Islam "Correlation Analysis of the Gold Codes and Walsh Codes in CDMA Technology", IEEE, 2009
  4. Hidenobu Fukumasa , Ryuji Kohno, and Hideki Imai "Design of Pseudo Random Noise Sequences with Good Odd and Even Correlation Properties" IEEE Second International Symposius on Spread Sprectrum tech. and Application, Japan Nov 29 Dec 2, 1992.
  5. Richard Haddad Ali Akansu "A new Orthogonal Transform for signal Coding".
  6. Richard Haddad Ali Akansu "A new Orthogonal Transform for signal Coding".
  7. Ian Oppermann "Orthogonal Complex Valued Spreading Sequences with a wide Range of Correlation Properties", IEEE transaction on communication Vol. 45, N0 11, Nov 1997.
  8. A. K. S. Al- Bayati and S. Prasad "Modified constant modulus algorithm for blind DS/CDMA", Electronics Lett, 1999.
  9. Ian Oppermann and B. S. Vucetic "Complex Valued Spreading Sequences with a wide Range of Correlation Properties", IEEE transaction on communication Vol. 45,pp. 365-375 N0 11, March
  10. Cenk Kose, Keith M. Chugg and Thomos R. Halford "Constant Modulus Orthogonal Frequency Division Multiplexing", 2010 IEEE Military communication conferenece.
  11. Intitive Guide to principles of communications www. complextoreal. co Copy Right 2002 Charan Langton.
Index Terms

Computer Science
Information Sciences

Keywords

Spread Spectrum Generalized Discrete Fourier Transform Auto-Correlation function Cross-Cross Correlation function PN Sequence CDMA Gold Codes Walsh Codes Discrete Fourier Transform.

Powered by PhDFocusTM