International Journal of Wireless Communications and Mobile Computing

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A Novel Hybrid Multiple Access Scheme in Downlink for 4G Wireless Communications

Received: 18 July 2013    Accepted:     Published: 30 October 2013
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Abstract

In this paper, we present a hybrid multiple access scheme to increase the data rate and to provide more flexibility for 4G wireless communications. The proposed scheme utilizes a combination of the multiple access techniques TDMA, CDMA and OFDMA. It uses variable time slots, spreading factors and number of subcarriers to provide flexible data rates for different classes of users. The performance analysis of the proposed scheme is carried out for different modulation schemes used in downlink and expressions for multiple access interference (MAI) and bit error rate (BER) are derived. The parameters for this scheme are selected depending on available bandwidth, required data rates, number of users, type of service provided etc. It is found that this scheme provides better scalability and can support more number of users.

DOI 10.11648/j.wcmc.20130104.14
Published in International Journal of Wireless Communications and Mobile Computing (Volume 1, Issue 4, November 2013)
Page(s) 103-112
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Multiple Access Scheme, FDMA, TDMA, CDMA, OFDMA

References
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[7] L. Hanzo, L. L. Yang, E. L. Kuan, K. Yen, Single and Multi-Carrier DS-CDMA: Multiuser Detection, Space Time Spreading, Synchronization, Networking and Standards, IEEE Press, 2005.
[8] S. Hara and R. Prasad, "Overview of multicarrier CDMA," IEEE Communication magazine, vol.35, pp.126-133, Dec., 1997.
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[10] Tobias Weber, Johannes Schlee, Stefan Bahrenburg, Paul Walter Baier, Jürgen Mayer and Christoph Euscher, "A Hardware Demonstrator for TD-CDMA," IEEE Transactions On Vehicular Technology, Vol. 51, No. 5, September 2002.
[11] M. Haardt, A. Klein, R. Koehn, S. Oestreich, M. Purat, V. Sommer, T. Ulrich, "The TD-CDMA based UTRA TDD mode," IEEE Journal on Selected Areas in Communications, vol. 18 August 2000.
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[15] K. Fazel, "Performance of CDMA/OFDM for mobile communication system," Proc. IEEE ICUPC’93, pp. 975-979, Oct., 1993.
[16] Z. Hou and V. K. Dubey, "Bit Error Rate Probability of MC-CDMA System over Rayleigh Fading Channels", ISSSTA2004, Sydney, Australia, 30 Aug.-2 Sep. 2004.
[17] H. Ishikawa, M. Furudate, T. Ohseki and T. Suzuki, "Performance Analysis of Adaptive Downlink Modulation Using OFDM and MC-CDMA for Future Mobile Communication System", ISSSTA2004, Sydney, Australia, 30 Aug.-2 Sep. 2004.
[18] S. Kondo and L.B. Milstein, "Performance of multicarrier DS-CDMA systems," IEEE transactions on Communications, vol. 44, no.2, pp.238-246, Feb., 1996.
[19] E. A. Sourour and M. Nakagawa, "Performance of orthogonal multicarrier CDMA in a multipath fading channel," IEEE Transactions on Communications, vol. 44, no. 3, pp.356-367, March, 1996.
[20] S. Suwa, H. Atarashi, and M. Sawahashi, "Performance Comparison Between MC/DS-CDMA and MC-CDMA for Reverse Link Broadband Packet Wireless Access," IEEE Vehicular Technology Conference, 2002 Proceedings vol.4 pp. 2076-2080, Sept. 2002.
Author Information
  • Electronics & Comm. Engg. Dept., National Institute of Technology, Rourkela, India

  • GSSST, Indian Institute of Technology, Kharagpur, India

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  • APA Style

    Poonam Singh, Saswat Chakrabarti. (2013). A Novel Hybrid Multiple Access Scheme in Downlink for 4G Wireless Communications. International Journal of Wireless Communications and Mobile Computing, 1(4), 103-112. https://doi.org/10.11648/j.wcmc.20130104.14

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    ACS Style

    Poonam Singh; Saswat Chakrabarti. A Novel Hybrid Multiple Access Scheme in Downlink for 4G Wireless Communications. Int. J. Wirel. Commun. Mobile Comput. 2013, 1(4), 103-112. doi: 10.11648/j.wcmc.20130104.14

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    AMA Style

    Poonam Singh, Saswat Chakrabarti. A Novel Hybrid Multiple Access Scheme in Downlink for 4G Wireless Communications. Int J Wirel Commun Mobile Comput. 2013;1(4):103-112. doi: 10.11648/j.wcmc.20130104.14

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  • @article{10.11648/j.wcmc.20130104.14,
      author = {Poonam Singh and Saswat Chakrabarti},
      title = {A Novel Hybrid Multiple Access Scheme in Downlink for 4G Wireless Communications},
      journal = {International Journal of Wireless Communications and Mobile Computing},
      volume = {1},
      number = {4},
      pages = {103-112},
      doi = {10.11648/j.wcmc.20130104.14},
      url = {https://doi.org/10.11648/j.wcmc.20130104.14},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.wcmc.20130104.14},
      abstract = {In this paper, we present a hybrid multiple access scheme to increase the data rate and to provide more flexibility for 4G wireless communications. The proposed scheme utilizes a combination of the multiple access techniques TDMA, CDMA and OFDMA. It uses variable time slots, spreading factors and number of subcarriers to provide flexible data rates for different classes of users. The performance analysis of the proposed scheme is carried out for different modulation schemes used in downlink and expressions for multiple access interference (MAI) and bit error rate (BER) are derived. The parameters for this scheme are selected depending on available bandwidth, required data rates, number of users, type of service provided etc. It is found that this scheme provides better scalability and can support more number of users.},
     year = {2013}
    }
    

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    AB  - In this paper, we present a hybrid multiple access scheme to increase the data rate and to provide more flexibility for 4G wireless communications. The proposed scheme utilizes a combination of the multiple access techniques TDMA, CDMA and OFDMA. It uses variable time slots, spreading factors and number of subcarriers to provide flexible data rates for different classes of users. The performance analysis of the proposed scheme is carried out for different modulation schemes used in downlink and expressions for multiple access interference (MAI) and bit error rate (BER) are derived. The parameters for this scheme are selected depending on available bandwidth, required data rates, number of users, type of service provided etc. It is found that this scheme provides better scalability and can support more number of users.
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