Analysis of Outage Probability for MC-CDMA Systems Using Different Spread Codes
DOI:
https://doi.org/10.51983/ajes-2019.8.3.2065Keywords:
Multi-Carrier (MC) Systems, Code Division Multiple Access (CDMA), Outage Probability, Spreading Codes, Wireless CommunicationAbstract
Modern communication systems demand proper utilisation of bandwidth, high throughput, integration of services and flexibility. To meet these requirements, spread spectrum code-division multiple access (CDMA) techniques have been proposed for various wireless communication systems. Here the individual user is assigned a unique binary code called spreading code used to increase capacity and provide higher robustness to interference. This paper investigates outage probability performance of MIMO multicarrier spread spectrum code-division multiple access (CDMA) with different robust spreading codes namely Walsh-Hadamard (WH), Gold and Kasami codes. Outage probability Poutage is significant performance measure to evaluate the effect of co-channel interference. System’s performance is initially evaluated in terms of outage probability by varying spreading factor (code length L) L= 4, 16, 64,256 for the number of subcarriers (NC) NC =4. In the second case spread factor SF is kept constant at L=64 and Poutage is analysed for varying number of subcarriers NC = 4, 16, 64. Outage probability analysis for system shows that under similar load conditions Kasami spread sequences outperforms Gold codes and WH codes in terms of outage probability for different spreading factor (SF) of codes and for varying number of subcarriers. This is because of its improved peak isolation and low cross-correlation than other.
References
E. H. Dinan and B. Jabbari, "Spreading codes for direct sequence CDMA and wideband CDMA cellular networks," IEEE Communication Magazine, vol. 36, no. 9, pp. 48-54, Sep. 1998.
S. Deshmukh and U. Bhosle, "Performance Analysis of Spread Spectrum System over Fading Channel Models," in IEEE International Conference on Communication and Signal Processing (ICCSP' 16), Tamil Nadu, India, Apr. 2016, pp. 662-666.
J. M. Velazquez-Gutierrez and C. Vargas-Rosales, "Sequence Sets in Wireless Communication Systems: A Survey," IEEE Communication Surveys and Tutorials, 2016.
L. Tomba, "Outage Probability in CDMA Cellular Systems with Discontinuous Transmission," in IEEE 4th International Symposium on Spread Spectrum Techniques and Applications Proceedings, vol. 2, pp. 481-485, 1996.
R. Prasad and S. Hara, "An Overview of Multi-Carrier CDMA," in IEEE 4th International Symposium on Spread Spectrum Techniques and Applications Proceedings, vol. 1, pp. 107-114, Dec. 1997.
O. B. Wojuola, S. H. Mneney, and V. Srivastava, "Performance of an STBC-CDMA system in a fading channel," in Intl. Conference on Computing and Network Communications, Dec. 2015, pp. 639-642.
K. Bruninghaus and H. Rohling, "Multi-carrier spread spectrum and its relationship to single-carrier transmission," in 48th IEEE Vehicular Technology Conference, VTC 98, May 1998, pp. 2329-2332.
K. Tsubone and A. Tsuneda, "Acquisition performance of spreading codes for CDMA-based local positioning systems under Doppler effect," in IEEE International Conference on Information and Communication Technology Convergence (ICTC), 2016, pp. 527-529.
A. Goldsmith, Wireless Communications. Cambridge University Press, 2005.
M. D. Turkmani and U. S. Goni, "Performance evaluation of maximal-length, gold and Kasami codes as spreading sequences in CDMA systems," in IEEE International Conference on Universal Personal Communications, vol. 2, pp. 970-974, 1993.
A. Conti, "MC-CDMA Bit Error Probability and Outage Minimization through Partial Combining," IEEE Commun., vol. 9, pp. 1055-1057, Dec. 2005.
B. Vojcic, L. Milstein, and R. Pickholtz, "Outage Probability for the Uplink of a DS-CDMA System Operating over an LEO Mobile Satellite Channel," in 5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks-Catching the Mobile Future, pp. 574–578, 1994.
M. Lopez-Benitez, "Outage Probability and Average Error Performance of Modulation Schemes under Nakagami-q(Hoyt) and Nakagami-n (Rice) Fading Channels," in 10th IEEE International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), pp. 1-6, 2016.
D. Torrieri and M. C. Valenti, "The Outage Probability of a Finite Ad Hoc Network in Nakagami Fading," IEEE Trans. Commun., vol. 60, no. 11, pp. 2960-2970, Dec. 2012.
L. Tomba, "Outage probability in CDMA cellular systems with discontinuous transmission," in IEEE Spread Spectrum Techniques and Applications Proceedings, vol. 2, pp. 481-485, 1996.
K. M. S. Huq, M. Shahid, and J. Rodriguez, "Outage Probability Analysis for Device-to-Device System," in IEEE International Conference on Communications QoS, Reliability and Modeling Symposium, 2016, pp. 1-5.
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