Year 2016, Volume 8 , Issue 1, Pages 1 - 8 2016-01-15

Investigation of the Subcarrier Allocation Algorithms Performance in MC-CDMA Systems
MC-CDMA Sistemlerinde Alt Taşıyıcı Tahsis Algoritmalarının Performanslarının İncelenmesi

M.nuri SEYMAN [1] , Bircan SAÇAKLI [2]


Multi Carrier Code Division Multiple Access is a multiple access technique that is used wireless and wireline applications and provides high rate and  quality of service (Qos) data transmission. Increasing the number of users decreases the number of subcarrier per user as result of this, increased bit error rate (BER) of received data and decrease data rate per users in the system because MC-CDMA is a multiuser technology. To overcome this problem, subcarrier allocation algorithms are used. In this work, performances of the subcarrier allocation algorithms are investigated to increase the total rate and fertilisation of the system  for  different numbers of user.

Çok Taşıyıcılı Kod Bölmeli Çoklu Erişim (MC-CDMA), kablolu ve kablosuz haberleşme uygulamalarında kullanılan, yüksek hızlarda ve servis kaliteli veri iletişimi sağlayan bir çoklu erişim tekniğidir. MC-CDMA çok kullanıcılı bir teknoloji olduğu için sistemdeki kullanıcı sayısının artması; kullanıcı başına düşen taşıyıcı sayısını azaltmakta, bunun sonucunda alıcı taraftan alınan verinin bit hata oranının (BHO) artmasına ve kullanıcı başına düşen veri hızlarının azalmasına neden olmaktadır. Bu sorunu engellemek için alt taşıyıcı tahsis algoritmaları kullanılmaktadır. Bu çalışmada, MC-CDMA sisteminde toplam hızı artırmak ve verimliliği sağlamak için alt taşıyıcı tahsis algoritmalarının performansı farklı kullanıcı sayıları için incelenmiştir.

  • Yee N., Linnartz J. P, Fettweis G., “Multi-carrier CDMA in indoor Wireless Radio Networks”, in Proc. IEEE PIMRC‟93, pp.468–472, 1993.
  • Kondo S., Milstein L. B., , “Performance of Multicarrier DS-CDMA Systems”, IEEE Transac. on Commun., vol.44, no.2, pp.238–246, February, 1996.
  • Prasad R., Hara S., “Overview of Multi-carrier CDMA”, IEEE Commun. Mag., pp.126–133, December, 1997.
  • Yang L. L., Hanzo L., “Multicarrier DS – CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications”, IEEE Commun. Mag., pp.116-124 , 2003.
  • Fazel K., Kaiser S., Multi-Carrier and Spread Spectrum Systems, John Wiley&Sons Ltd, England, 2003.
  • Xu, J., Kim, J., Paik, W., Seo, J.S. ” Adaptive Resource Allocation Algorithm With Fairness For MIMO-OFDMA System”, IEEE Vehicular Technology Conference, vol.4, 1585-1589, 2006.
  • Rasouli, H., Anpalagan, A., “An Asymptotically Fair Subcarrier Allocation Algorithm in OFDM Systems”, IEEE Vehicular Technology Conference, 1-5, 2009.
  • Otani, Y., Ohno, S., Teo, K.A.D., Hinamoto, T., “Subcarrier Allocation For Multi-user OFDM System”, Asia-Pasific Conference on Commun., 1073-1077, 2005.
  • Bin Da , C.C., Ko, Yanfen, Liang, “An Enhanced Capacity and Fairness Scheme for MIMO-OFDMA Downlink Resource Allocation”, International Symposium on Commun. and Information Technologies, 495-499, 2007.
  • Rasouli, H., Sadr, S., Anpalagan, A., “A Fair Subcarrier Allocation Algorithm for Cooperative Multiuser OFDM Systems with Grouped Users”, IEEE Global Telecommun. Conference, 1-6, 2008.
  • Yang, J.S., Park, S.K., Kwon, J.W. , ”Performance Analysis of Adaptive Subcarrier Allocation Scheme To Support Qos In Multiuser OFDM System”,Wireless and Optical Commun. Conference, 1-4, 2009.
  • Lee, J., Yoon, D., Jeong, W.K., Cha, K., et al., “Efficient Subcarrier Allocation for Stable Services In Multi-user OFDM Systems”, Mobile and Wireless Commun. Summit, 1-4, 2007.
  • Zhou, X-J, Zhang, J-S, “An Improved Fair Subcarrier Allocation Algorıthm for Multiuser OFDM System”, International Conference On Electronic and Mechanical Engineering and Information Technology , vol.5, 2548-2552, 2011.
  • Zhang, T., Zeng, Z., Qiu, Y., “A Subcarrier Allocation Algorithm for Utiliy Proportional Fairness in OFDM Systems”, IEEE Vehicular Technology Conference, 1901-1905, 2008.
  • Zhang, G., Feng, S., “Subcarrier Allocation Algorithms Based On Graph-Coloring In Cognitive Radio NC-OFDM System”, IEEE International Conference on Computer Science and Information Technology, vol.2, 535-540, 2010.
  • Zhang, L., Zhang, S., Zhou, W., “A New Ratio-based Selection Adaptive Subcarrier Allocation Algorithm”, International Conference on Commun., Circuits and Systems Proceedings, vol.2, 1189-1192, 2006.
  • Pandharipande, A., Kountouris, M., Ho Yang, Park, H., “Subcarrier Allocation Schemes For Multiuser OFDM Systems”, International Conference on Signal Processing and Commun., 540-544, 2004.
Journal Section Articles
Authors

Author: M.nuri SEYMAN

Author: Bircan SAÇAKLI

Dates

Publication Date : January 15, 2016

APA Seyman, M , Saçaklı, B . (2016). Investigation of the Subcarrier Allocation Algorithms Performance in MC-CDMA Systems . International Journal of Engineering Research and Development , 8 (1) , 1-8 . DOI: 10.29137/umagd.346132