Location-aware downlink and uplink power control and throughput optimization in cellular cognitive radio networks

Abstract

In this paper, we consider throughput maximization in cognitive radio systems with proper power control. In particular, we incorporate location-awareness into the power control design and maximize the average throughput of the cognitive system. As we shall show, the proposed approach effectively utilizes the “spatial opportunity” to maximize the system throughput, which clearly outperforms traditional power control methods. Further, the proposed approach still exhibits significant throughput gain even considering imperfect position information, with appropriate robust design modifications.

Keywords

cognitive radios / spectrum hole / power control / localization / optimization

References

[1] Mitola J III. Cognitive radio for flexible mobile multimedia communications. In: Proceedings of 1999 IEEE International Workshop on Mobile Multimedia Communications. 1999, 3–10

[2] Federal Communications Commission Spectrum Policy Task Force. FCC Report of the Spectrum Efficiency Working Group, 2002

[3] Haykin S. Cognitive radio: brain-empowered wireless communications. IEEE Journal on Selected Areas in Communications, 2005, 23(2): 201–220

[4] Weiss T A, Jondral F K. Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency. IEEE Communications Magazine, 2004, 42(3): S8–14

[5] Celebi H, Arslan H. Cognitive positioning systems. IEEE Transactions on Wireless Communications, 2007, 6(12): 4475–4483

[6] Gong D, Ma Z, Li Y, Chen W, Cao Z. High order geometric range free localization in opportunistic cognitive sensor networks. In: Proceedings of IEEE International Conference on Communications Workshops. 2008, 139–143

[7] Kim S, Jeon H, Ma J. Robust localization with unknown transmission power for cognitive radio. In: Proceedings of IEEE Military Communications Conference. 2007, 1–6

[8] Ma Z, Letaief K B, Chen W, Cao Z. A semi range-based iterative localization algorithm for cognitive radio networks. In: Proceedings of IEEE Wireless Communications and Networking Conference. 2009, 2214–2218

[9] Gurney D, Buchwald G, Ecklund L, Kuffner S L, Grosspietsch J. Geo-location database techniques for incumbent protection in the TV white space. In: Proceedings of the 3rd IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks. 2008, 232–240

[10] Zhao G, Ma J, Li Y, Wu T, Kwon Y H, Soong A, Yang C. Spatial spectrum holes for cognitive radio with directional transmission. In: Proceedings of IEEE Global Telecommunications Conference. 2008, 1–5

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 60832008), and National Natural Science Foundation of China / Research Grants Council of Hong Kong (No. N-HKUST622/06).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg