Total views : 5037

Performance Enhancement of Indoor Wireless Infrared CDMA System Based on ZCC Code and Multiple Cell Configurations

Affiliations

  • Centre of Excellence Advanced Communication Engineering (CoE ACE), Universiti Malaysia Perlis (UniMAP), Malaysia

Abstract


Objectives: The aim of this paper is to develop an indoor wireless infrared CDMA system based on Zero Cross Correlation (ZCC) code to minimize the effect of noises, and thus improves the overall performance. Methods/ analysis: Two different configurations of 1-cell and 4-cell are investigated. A mathematical framework to calculate the SNR and the BER under the effect of total noise such as LED shot noise, ambient light shot noise and thermal noise, is derived. The system performance is analysed in terms of SNR and BER, versus the width and length of the room, and number of users, respectively, and then compared with the system based on a Flexible Cross Correlation (FCC) code. Findings: The indoor infrared CDMA based on 4-cell configuration using the ZCC code showed better performance than the system based on 1-cell configuration or using the FCC code. As results, the 4-cell configuration based on ZCC could accommodate a larger number of users rate at the corners and edges of the room. It offered 42% and 150% larger cardinality at the edges, and the corners of the room respectively, compared to the 1-cell configuration. In addition, this system also offered 55%, 47%, 51% larger cardinality at the centre, the edges, and the corners of the room, respectively, in contrast to the FCC code. Application/Improvement: The proposed 4-cell configuration based on ZCC code for indoor wireless infrared CDMA system enhances the cardinality, and offers an excellent degree of mobility.

Keywords

FCC Code, Indoor Wireless, Infrared, Multiple Cell Configuratuions, OCDMA, ZCC Code

Full Text:

 |  (PDF views: 399)

References


  • Padgett JE, Gunther CG, Hattori T. Overview of wireless personal communications. Institute of Electrical and Electronics Engineers (IEEE) Communications Magazine.1995 Jan; 33(1):28–41. Crossref
  • Kahn JM, Barry JR editors. Wireless infrared communications.In the Proceedings of the Institute of Electrical and Electronics Engineers (IEEE). 1997 Feb; 85(2):265–98.
  • Alyan EA, Aljunid SA, Anuar MS. Mobile optical wireless system for healthcare continuous monitoring using IR technology. Journal of Theoretical and Applied Information Technology. 2015; 78(3):353–9.
  • Liu J, Pan Z, Noonpakdee W, Shimamoto S. Impact of light reflection on indoor wireless optical CDMA systems.Institute of Electrical and Electronics Engineers (IEEE)/ OSA Journal of Optical Communications and Networking.2012 Dec; 4(12):989–96. Crossref
  • Feng L, Wang J, Hu R, Liu L. New design of optical zero correlation zone codes in quasi-synchronous VLC CDMA systems. EURASIP Journal on Wireless Communications and Networking. 2015 Dec; 2015:120.
  • Ghassemlooy Z, Hayes AR. Indoor optical wireless communication systems – part I: review. Northumbria University, Newcastle uopn Tyne, Quantum Beam Ltd, UK; 2003. p.11–31.
  • Zhou X, Shalaby HHM, Lu C, Cheng T. Code for spectral amplitude coding optical CDMA systems. Electronics Letters. 2000; 36(8):728–9. Crossref
  • Lin CH, Wu J, Tsao HW, Yang CL. Spectral amplitudecoding optical CDMA system using mach-zehnderinterferometers. Journal of Lightwave Technology. 2005 Apr; 23(4):1543–55. Crossref
  • Andrew S, Edward HS. Lighting the local area: optical code-division multiple access and quality of service provisioning.Institute of Electrical and Electronics Engineers (IEEE) Network. 2000 Nov–Dec; 14(6):42–6.
  • Aljunid SA, Ismail M, Ramli AR, Ali BM, Abdullah MK.A new family of optical code sequences for spectral-amplitudecoding optical CDMA systems. Institute of Electrical and Electronics Engineers (IEEE) Photonics Technology Letters. 2004 Oct; 16(10):2383–5. Crossref
  • Rashidi CBM, Aljunid SA, Ghani F, Fadhil HA, Anuar MS.New design of Flexible Cross Correlation (FCC) code for SACOCDMA system. Procedia Engineering. 2013; 53:420– 7. Crossref
  • Anuar MS, Aljunid SA, Saad NM, Hamzah SM. New design of spectral amplitude coding in OCDMA with zero cross-correlation. Optics Communications. 2009 Jul 15; 282(14):2659–64. Crossref
  • Ghassemlooy Z, Wu D, Khalighi MA, Tang X. Indoor nondirected optical wireless communications-optimization of the lambertian order. Journal of Electrical and Computer Engineering Innovation (JECEI). 2013 Sep–Dec; 1(1):1–9.
  • Singh C, John J, Singh YN, Tripathi KK. A review of indoor optical wireless systems. IETE Technical Review. 2002 Jan– Apr; 19(1–2):3–17. Crossref
  • Kahn J, Barry J, Audeh M, Carruthers J, Krause W, Marsh G. Non-directed infrared links for high-capacity wireless LANs. Institute of Electrical and Electronics Engineers (IEEE) Personal Communication Magazine. 1994 Apr–Jun; 1:12–25. Crossref
  • Ghassemlooy Z, Popoola WO, Rajbhandari S. Optical wireless communications – system and channel modelling with Matlab. CRC publisher; 2012 Aug 8. p. 575.
  • Raza I, Jabeen S, Chaudhry SR, Hussain SA, Saeed A, Bhatti MS, et al. Optical wireless channel characterization for indoor visible light communications. Indian Journal of Science and Technology. 2015 Sep; 8(22):1–9. Crossref
  • Ravi Kumar CV, Praveen Bagadi K. Robust neural network based multiuser detector in MC–CDMA for multiple access interference mitigation. Indian Journal of Science and Technology. 2016 Aug; 9(30):1–7. Crossref
  • Wei Z, Shalaby HMH, Ghafouri-Shiraz H. Modified quadratic congruence codes for fiber bragg-grating-basedspectral-amplitude-coding optical CDMA systems. Journal of Lightwave Technology. 2001 Sep; 19(9):1274–81.
  • Ghafouri-Shiraz H, Karbassian MM. Optical CDMA networks principles, analysis and applications. Johan Willy and Sons, Ltd; 2012 Mar. p. 432.
  • Kumar K, Sardar S, Sangeetha A. An approach for enhancement of bit error rate analysis in SAC-OCDMA. Indian Journal of Science And Technology. 2015 Jan; 8(S2):179– 84. Crossref
  • Alyan EA, Aljunid SA, Anuar MS, Rashidi CBM. Analysis of theoretical and simulated performance of indoor optical wireless system based on CDMA technology. 3rd International Conference on Electronic Design (ICED), Phuket, Thailand; 2016. p. 164–9.

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.