CFP last date
01 May 2024
Call for Paper
June Edition
CAE solicits high quality original research papers for the upcoming June edition of the journal. The last date of research paper submission is 01 May 2024

Submit your paper
Know more
The week's pick
Responsive image
An Improve Shannon Fano Data Compression Algorithm using Residue Number System

T.D. Lawal L.O. Olatunbosun K.A. Gbolagade
Random Articles
Reseach Article

Adaptive Modulation for SFBC-OFDM Systems with Zero-Forcing Equalization

by P.N. Kota, A.N. Gaikwad, Pranav M. Patil
journal cover thumbnail

Communications on Applied Electronics
Foundation of Computer Science (FCS), NY, USA
Volume 3 - Number 2
Year of Publication: 2015
Authors: P.N. Kota, A.N. Gaikwad, Pranav M. Patil
10.5120/cae2015651870

P.N. Kota, A.N. Gaikwad, Pranav M. Patil . Adaptive Modulation for SFBC-OFDM Systems with Zero-Forcing Equalization. Communications on Applied Electronics. 3, 2 ( October 2015), 6-11. DOI=10.5120/cae2015651870

@article{ 10.5120/cae2015651870,
author = { P.N. Kota, A.N. Gaikwad, Pranav M. Patil },
title = { Adaptive Modulation for SFBC-OFDM Systems with Zero-Forcing Equalization },
journal = { Communications on Applied Electronics },
issue_date = { October 2015 },
volume = { 3 },
number = { 2 },
month = { October },
year = { 2015 },
issn = { 2394-4714 },
pages = { 6-11 },
numpages = {9},
url = { https://www.caeaccess.org/archives/volume3/number2/437-2015651870/ },
doi = { 10.5120/cae2015651870 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2023-09-04T19:43:19.600305+05:30
%A P.N. Kota
%A A.N. Gaikwad
%A Pranav M. Patil
%T Adaptive Modulation for SFBC-OFDM Systems with Zero-Forcing Equalization
%J Communications on Applied Electronics
%@ 2394-4714
%V 3
%N 2
%P 6-11
%D 2015
%I Foundation of Computer Science (FCS), NY, USA
Abstract

The Space frequency block coded OFDM gives better performance in highly frequency selective and time varying channel than STBC OFDM. Hence this system can be mostly useful in vehicular communication where user is highly mobile. In this paper, An Adaptive modulation scheme for SFBC-OFDM system is proposed to give the reliable connectivity as well as efficient data rate to highly mobile user. Here, the bit rate is adapted according to the SNR value estimated from channel. For variation in bit rate the M-QAM modulations scheme is selected by comparing estimated SNR value and threshold value for switching. Also to reduce the effect channel which distorted the transmitted signal the Zero forcing (ZF) equalization is used. Finally performance of proposed system is analyzed with BER VS SNR plot.

References
  1. S.M. Alamouti, “A simple transmit diversity technique for wireless communications,” IEEE J. Sel. Areas Common., vol.16, no.8, pp.1451–1458, 1998.
  2. G. Bauch, “Space-time block codes versus space-frequency block codes,” in Proc. IEEE Vehicular Technology Conference, pp. 567- 571, May 2003
  3. Lee, K.F. Williams, D.B. “A space-frequency transmitter diversity technique for OFDM systems” Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE (Volume:3 ) 10.1109/GLOCOM.2000.891885
  4. Mohammad AftabAlam Khan, MehwashFarooqui “Performance Analysis of SFBC-OFDM System with Frequency Domain Equalization” International Journal of Scientific & Engineering Research, Volume 3, Issue 11, November-2012
  5. Hayes JF. Adaptive feedback communications. IEEE Trans CommunTechnol 1968;16:29–34.
  6. Torrance J, Hanzo L. Optimisation of switching levels for adaptive modulation in slow rayleigh fading channel. Electronic Letters 1996;32:1167–9
  7. Choi BJ, Hanzo L. Optimum mode-switching assisted adaptive modulation. In: Proceedings of IEEE global telecommunication Conference (GLOBECOM’01), vol. 6,2001, p. 3316–20.
  8. Hanzo L, Web W, Keller T. Single and multicarrier quadrature amplitude modulation. New York, USA: Wiley; 2000.
  9. Keller T, Hanzo L. Adaptive muticarriermodulation:a convenient frame work for time–frequency processing wireless communications. Proc IEEE 2000;88:611–40.
  10. Kalet I. The multitone channel. IEEE Trans Commun 1989;37:119–24
  11. Liew TH, Hanzo L. Space–time block coded adaptivemodulation aided OFDM. In: Proceedings of IEEE globaltelecommunication conference (GLOBECOM’01) vol. 1,2001. p. 136–40.
  12. Liang Heng, Member, Louay M.A. Jalloul“Performance of the 3GPP LTE Space-FrequencyBlock Codes in Frequency-Selective Channels withImperfect Channel Estimation”DOI 10.1109/TVT.2014.2341612, IEEE Transactions on Vehicular Technology.
  13. Mohammad AftabAlam Khan, MehwashFarooqui“Performance Analysis of SFBC-OFDM System with Frequency Domain Equalization”International Journal of Scientific & Engineering Research, Volume 3, Issue 11, November-2012
  14. R.O. Abolade,Z. K. Adeyemo“Adaptive Modulation Performance In MimoOSTBC Over Rayleigh Fading Channel”International Journal of Engineering & Computer Science IJECS -IJENS Vol:12 No:06
  15. Jinliang Huang Svante Signell“On Performance of Adaptive Modulation in MIMOSystems Using Orthogonal Space–Time Block Codes”IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 58, NO. 8, OCTOBER 2009
  16. VarshaBirla,Rupesh Dubey “Capacity Enhancement of WiMAX System Using Adaptive Modulation and Code Rate” International Journal of Emerging Technology and Advanced Engineering Website: www.ijetae.com (ISSN 2250-2459, Volume 2, Issue 8, August 2012)
  17. Mohammad Torabi“Adaptive modulation for space–frequency block coded OFDM systems”Int. J. Electron. Commun. (AEÜ) 62 (2008) 521 – 533www.elsevier.de/aeue
Index Terms

Computer Science
Information Sciences

Keywords

Orthogonal Frequency Division Multiplexing (OFDM) Space Frequency Block coding (SFBC) Space time block coding (STBC)

Powered by PhDFocusTM