Abstract
Fixed spectrum assignment policy lead to the need for a more dynamic approach to spectrum access. This paper analyzes the optimal dynamic spectrum sharing possibilities among primary and secondary users in cognitive radio networks, where the channel access for both primary and secondary users in the same channel is contention-based. We assume slotted time. Fixed and random allocations of primary users in the channels are considered for contention-based study. This means that in a fixed allocation, the number of primary users is fixed in a specific channel; their number may vary in different channels. Random allocation on the other hand considers primary users randomly allocated in different channels in each time slot. Given the number of channels and primary users, we find the optimal number of secondary users that obtains maximum throughput in spectrum sharing with primary users. The results obtained provide low complexity solutions for implementation in practical systems.
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References
Wang, B., Liu, K.: Advances in cognitive radio networks: A survey. IEEE Journal of Selected Topics in Signal Processing 5(1), 5–23 (2011)
Stotas, S., Nallanathan, A.: Enhancing the capacity of spectrum sharing cognitive radio networks. IEEE Transactions on Vehicular Technology 60(8), 3768–3779 (2011)
Zhao, Q., Sadler, B.: A survey of dynamic spectrum access. IEEE Signal Processing Magazine 24(3), 79–89 (2007)
Goldsmith, A., Jafar, S., Maric, I., Srinivasa, S.: Breaking spectrum gridlock with cognitive radios: An information theoretic perspective. Proceedings of the IEEE 97(5), 894–914 (2009)
Le, L., Hossain, E.: Resource allocation for spectrum underlay in cognitive radio networks. IEEE Transactions on Wireless Communications 7(12), 5306–5315 (2008)
Kim, D., Le, L., Hossain, E.: Joint rate and power allocation for cognitive radios in dynamic spectrum access environment. IEEE Transactions on Wireless Communications 7(12), 5517–5527 (2008)
Haykin, S.: Cognitive radio: brain-empowered wireless communications. IEEE Journal on Selected Areas in Communications 23(2), 201–220 (2005)
Jayaweera, S., Vazquez-Vilar, G., Mosquera, C.: Dynamic spectrum leasing: A new paradigm for spectrum sharing in cognitive radio networks. IEEE Transactions on Vehicular Technology 59(5), 2328–2339 (2010)
Lin, P., Jia, J., Zhang, Q., Hamdi, M.: Dynamic spectrum sharing with multiple primary and secondary users. IEEE Transactions on Vehicular Technology (99), 1–5 (2010)
Hakim, K., Jayaweera, S., El-howayek, G., Mosquera, C.: Efficient dynamic spectrum sharing in cognitive radio networks: centralized dynamic spectrum leasing (c-dsl). IEEE Transactions on Wireless Communications 9(9), 2956–2967 (2010)
El-Howayek, G., Jayaweera, S.: Distributed dynamic spectrum leasing (d-dsl) for spectrum sharing over multiple primary channels. IEEE Transactions on Wireless Communications 10(1), 55–60 (2011)
Srinivasa, S., Jafar, S.: How much spectrum sharing is optimal in cognitive radio networks? IEEE Transactions on Wireless Communications 7, 4010–4018 (2008)
Wadhwa, M., Xin, C., Song, M., Park, E.: Throughput Analysis for a Contention-Based Dynamic Spectrum Sharing Model. IEEE Transactions on Wireless Communications 9(4), 1426–1433 (2010)
Chang, N., Liu, M.: Competitive analysis of opportunistic spectrum access strategies. In: Proc. IEEE Infocom, pp. 1535–1542 (2008)
Huang, S., Liu, X., Ding, Z.: Opportunistic spectrum access in cognitive radio networks. In: Proc. IEEE Infocom, pp. 1427–1435 (2008)
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© 2012 Springer-Verlag Berlin Heidelberg
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Wadhwa, M., Xin, C., Song, M., Diawara, N., Zhao, Y., Kaur, K. (2012). Optimal Spectrum Sharing for Contention-Based Cognitive Radio Wireless Networks. In: Wang, X., Zheng, R., Jing, T., Xing, K. (eds) Wireless Algorithms, Systems, and Applications. WASA 2012. Lecture Notes in Computer Science, vol 7405. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31869-6_16
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DOI: https://doi.org/10.1007/978-3-642-31869-6_16
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-31868-9
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