The Community for Technology Leaders
RSS Icon
Subscribe
Issue No.06 - June (2010 vol.9)
pp: 765-777
Mohammad G. Khoshkholgh , Tarbiat Modares University, Tehran
Keivan Navaie , Tarbiat Modares University, Tehran
Halim Yanikomeroglu , Carleton University, Ottawa
ABSTRACT
In this paper, we consider DS-CDMA/OFDM spectrum sharing systems and obtain the achievable capacity of the secondary service under different subchannel selection policies in the fading environment. Subchannel selection policies are divided into two categories: uniform subchannel selection, and nonuniform subchannel selection. Uniform subchannel selection is preferred for cases where a priori knowledge on subchannels state information is not available at the secondary transmitter. For cases with available a priori knowledge on subchannels state information, we study various nonuniform subchannel selection policies. In each case, we obtain the optimum secondary service power allocation and the corresponding maximum achievable capacity. Then we present results on the scaling law of the opportunistic spectrum sharing in DS-CDMA/OFDM systems with multiple users. Numerical results show that the optimal subchannel selection is based on the minimum value of the subchannel gain between the secondary transmitter and the primary receiver.
INDEX TERMS
Dynamic spectrum access networks, DS-CDMA networks, interference threshold, OFDM, opportunistic spectrum access, spectrum sharing.
CITATION
Mohammad G. Khoshkholgh, Keivan Navaie, Halim Yanikomeroglu, "Achievable Capacity in Hybrid DS-CDMA/OFDM Spectrum-Sharing", IEEE Transactions on Mobile Computing, vol.9, no. 6, pp. 765-777, June 2010, doi:10.1109/TMC.2010.15
REFERENCES
[1] J.M. Peha, "Approaches to Spectrum Sharing," IEEE Comm. Magazine, vol. 43, no. 2, pp. 10-12, Feb. 2005.
[2] S. Haykin, "Cognitive Radio: Brain-Empowered Wireless Comm.," IEEE J. Selected Areas in Comm., vol. 23, no. 2, pp. 201-220, Feb. 2005.
[3] Q. Zhao and B. Sadler, "A Survey of Dynamic Spectrum Access: Signal Processing, Networking, and Regulatory Policy," IEEE Signal Processing Magazine, vol. 24, no. 3, pp. 79-89, May 2007.
[4] M.G. Khoshkholgh, K. Navaie, and H. Yanikomeroglu, "Impact of the Secondary Service Transmit Power Constraint on the Achievable Capacity of Spectrum Sharing in Rayleigh Fading Environment," IEEE Comm. Letters, vol. 12, no. 12, pp. 865-867, Dec. 2008.
[5] M.G. Khoshkholgh, K. Navaie, and H. Yanikomeroglu, "On the Impact of the Primary Network Activity on the Achievable Capacity of Spectrum Sharing over Fading Channels," IEEE Trans. Wireless Comm., vol. 8, no. 4, pp. 2100-2111, Apr. 2009.
[6] M.G. Khoshkholgh, K. Navaie, and H. Yanikomeroglu, "Adaptive Multiple Time-Scale Power Allocation for Spectrum Sharing DS-CDMA Networks," Proc. IEEE Int'l Conf. Comm. (ICC CogNet '08), pp. 466-470, May 2008.
[7] A.J. Viterbi, CDMA: Principles of Spread Spectrum Communication. Addison-Wesley, 1995.
[8] M. Gastpar, "On Capacity Under Receive and Spatial Spectrum-Sharing Constraints," IEEE Trans. Information Theory, vol. 53, no. 2, pp. 471-487, Feb. 2007.
[9] S.A. Jafar and S. Srinivasa, "Capacity Limits of Cognitive Radio with Distributed and Dynamic Spectral Activity," IEEE J. Selected Areas in Comm., vol. 25, no. 3, pp. 529-537, Apr. 2007.
[10] A. Ghasemi and E.S. Sousa, "Fundamental Limits of Spectrum-Sharing in Fading Environments," IEEE Trans. Wireless Comm., vol. 6, no. 2, pp. 649-658, Feb. 2007.
[11] L. Zhang, Y.C. Liang, and Y. Xin, "Joint Beamforming and Power Allocation for Multiple Access Channels in Cognitive Radio Networks," IEEE J. Selected Areas in Comm., vol. 26, no. 1, pp. 38-51, Jan. 2008.
[12] H. Su and X. Zhang, "Cross-Layer Based Opportunistic MAC Protocols for QoS Provisionings over Cognitive Radio Wireless Networks," IEEE J. Selected Areas in Comm., vol. 26, no. 1, pp. 118-129, Jan. 2008.
[13] S. Geirhofer, L. Tong, and B.M. Sadler, "Cognitive Medium Access: Constraining Interference Based on Experimental Models," IEEE J. Selected Areas in Comm., vol. 26, no. 1, pp. 95-105, Jan. 2008.
[14] M. Sharma, A. Sahoo, and K.D. Nayak, "Channel Selection under Interference Temperature Model in Multi-Hop Cognitive Mesh Networks," Proc. IEEE Int'l Symp. New Frontiers in Dynamic Spectrum Access Network (DySPAN '07), pp. 133-136, Apr. 2007.
[15] N. Nie and C. Comaniciu, "Adaptive Channel Allocation Spectrum Etiquette for Cognitive Radio Networks," Proc. IEEE Int'l Symp. New Frontiers in Dynamic Spectrum Access Network (DySPAN '05), pp. 331-335, Nov. 2005.
[16] D. Tse and P. Viswanath, Fundamentals of Wireless Communication. Cambridge Univ. Press, Sept. 2004.
[17] A. Papoulis and S.U. Pillai, Probability, Random Variables, and Stochastic Processes, fourth ed. McGraw-Hill, 2002.
[18] P. Gupta and P.R. Kumar, "The Capacity of Wireless Networks," IEEE Trans. Information Theory, vol. 46, no. 2, pp. 388-404, Mar. 2000.
[19] M. Grossglauser and D.N.C. Tse, "Mobility Increases the Capacity of Ad Hoc Wireless Networks," IEEE/ACM Trans. Networking, vol. 10, no. 4, pp. 477-486, Aug. 2002.
[20] R. Knopp and P.A. Humblet, "Information Capacity and Power Control in Single-Cell Multiuser Comm.," Proc. IEEE Int'l Conf. Comm. (ICC '95), pp. 331-335, June 1995.
31 ms
(Ver 2.0)

Marketing Automation Platform Marketing Automation Tool