WET  Vol.1 No.1 , July 2010
The Performance Gain of Cognitive Radio in Adaptive Modulation Scheme
Author(s) Fotis Foukalas
Abstract
Cognitive radio is considered as one of the main enablers for provisioning dynamic and flexible spectrum/channel allocation in wireless communications. The reliable data transmission over cognitive radio should employ modulation, coding etc. and thus the performance of such a new communication system should be realized. In this paper, we provide the performance analysis of adaptive modulation over a cognitive radio system in order to study the potential gain of cognitive radios in terms of spectral efficiency. The results obtained show that the performance gain of cognitive radio in adaptive modulation is remarkable.

Cite this paper
nullF. Foukalas, "The Performance Gain of Cognitive Radio in Adaptive Modulation Scheme," Wireless Engineering and Technology, Vol. 1 No. 1, 2010, pp. 10-13. doi: 10.4236/wet.2010.11002.
References

[1]   S. Haykin, “Cognitive Radio: Brain-Empowered Wireless Communications,” Selected Areas in Communications, IEEE Journal on, Vol. 23, No. 2, 7 February 2005, pp. 201-220.

[2]   Q. Zhao and B. M. Sadler, “A Survey of Dynamic Spect- rum Access: Signal Processing, Networking, and Regula-tory Policy,” IEEE Signal Processing Magazine: Special Issue on Resource-Constrained Signal Processing, Com-munications, and Networking, May 2007, pp. 79-89.

[3]   M. Haddad, A. Hayar and M. Debbah, “Spectral Efficiency of Spectrum-Pooling Systems,” Communications, Institution of Engineering and Technology, July 2008, Vol. 2, No. 6, pp. 733-741.

[4]   M. Alouini and A. J. Goldsmith, “Adaptive Modulation over Nakagami Fading Channels,” Wireless Personal Communications, Vol. 13, No. 1-2, 2000, pp. 119-143.

[5]   A. J. Goldsmith and S.-G. Chua, “Variable-Rate Varia-ble-Power MQAM for Fading Channels,” IEEE Transac-tions on Communications, Vol. 45, No. 10, October 1997, pp. 1218-1230.

[6]   M. Alouini and A. J. Goldsmith, “Capacity of Rayleigh Fading Channels Under Different Adaptive Transmission and Diversity-Combining Techniques,” IEEE Transac- tions on Vehicular Technology, Vol. 48, No. 4, July 1999, pp. 1165-1181.

 
 
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