The week's pick
Reseach Article
Bit Rate and Security Enhancement for DS-JCDMA using IFFT and H-Polarity, V-Polarity Transmitter Waves
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 95 - Number 3 |
| Year of Publication: 2014 |
| Authors: Saifuldeen A. Mohammed, Abdullah Abdali Jassim, Ismael Shanan Desher |
10.5120/16572-6253
|
Saifuldeen A. Mohammed, Abdullah Abdali Jassim, Ismael Shanan Desher . Bit Rate and Security Enhancement for DS-JCDMA using IFFT and H-Polarity, V-Polarity Transmitter Waves. International Journal of Computer Applications. 95, 3 ( June 2014), 4-12. DOI=10.5120/16572-6253
Abstract
High bit rate and more security for physical layer are very important today therefore they grow and evolution because of the large size media and accuracy of the information transmitted now, But that cannot be changing generation systems every time, Therefore we need a programmable system and immediate change by re-change protocol or changes completely through programming devices to become much more affordable, customizable for costumer users and Consecration; Therefore we propose the physical layer system that can be programmable using the system that already work like LTE-OFDM, W-CDMA, CDMA2000 … etc. this system is using n-QAM and n-QPSK as base data instead off 1,0 binary system but transmitter by MC-CDMA or OFDM-CDMA (MC-DS-JCDMA) in both H-Polarity and V-Polarity waves with more security using JPN instead off PN. The results were without channel estimator or equalizer acceptable in 24dB with high bit rate and low bandwidth in both selective and flat fading channel added with AWGN and Doppler Effect.
References
- Saifuldeen Abdulameer Mohammed "Space Time Block Code for PCC, MC-CDMA Using Slantlet Transform" M. Sc Thesis, June 2007, Electrical Engineering Department, College of Engineering, Baghdad University.
- "OFDM as a modulation technique for wireless communications, with a CDMA comparison", Online: http://www. skyofdm. org 1999.
- J. Huber, "3G Forum Leveraging Spectrum Capacity In Accordance with 3G Deployment", 3G Forum 17th-18th April 2001, Washington D. C. ,Online:http://www. umtsforum. org/ipapers/Leveraging_Spectrum_Capacity. pdf.
- Telia Sonera first in the world with 4G services (http:// www. teliasonera. com/ en/ media/ press-releases/ 2009/ 12/teliasonera-first-in-the-world-with-4g-services/).
- Erik Dahlman, Stefan Parkvall, Johan Sköld "4G – LTE/LTE-Advanced for Mobile Broadband", Academic Press,2011, ISBN 978-0-12-385489-6
- Saifuldeen Abdulameer Mohammed, "Proposed System to Increase the Bits rat for User in the Chip packet using Complex number in Code Division Multiplexing Access and Pseudo Noise (JCDMA and JPN)", Published in the proceeding of the Second Scientific Conference of Electrical Engineering University of Technology 4-5 April 2011 CE13 pp 200-211.
- Saifuldeen Abdulameer Mohammed, "A Propose for aQuadrature – Phase as Full Orthogonal Matrix TransformCompared with FFT Matrix Multiplication and Appliedin OFDM System (Safe Transform the Fourier Twins)",Doi :10. 7321/jscse. Vol. 2, No. 6. 5, Jun pp : 56 –72
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