Power allocation for cognitive radios based on primary user activity in an OFDM system

GLOBECOM - IEEE Global Telecommunications Conference

Volumn , Issue , 2008, Pages 4512-4517

  Hasan, Ziaul ^a   Hossain, Ekram ^b   Despins, Charles ^a,b   Bhargava, Vijay K ^a  

^a UNIVERSITY OF BRITISH COLUMBIA   (Canada)

^b UNIVERSITY OF MANITOBA   (Canada)

Author keywords

Based cognitive radio; Convex optimization; Power allocation; Risk return model; Waterfilling solution

Indexed keywords

BASED COGNITIVE RADIO; COGNITIVE RADIO; LINEAR RATE; LOSS FUNCTIONS; OFDM SYSTEMS; OPTIMAL SCHEME; POWER ALLOCATION; POWER ALLOCATION ALGORITHMS; POWER ALLOCATIONS; POWER BUDGETS; RATE LOSS; SUB-CARRIERS; SUB-OPTIMAL ALGORITHMS; UPPER BOUND; USER ACTIVITY; WATER-FILLING ALGORITHM; WATERFILLING; WATERFILLING SOLUTION;

ALGORITHMS; CONVEX OPTIMIZATION; OPTIMIZATION; ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING; RADIO SYSTEMS; WATER LEVELS;

RADIO;

EID: 67249118706     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1109/GLOCOM.2008.ECP.865     Document Type: Conference Paper

References (8)

1. D. Tse and P. Vishwanath, Fundamentals of Wireless Communications, Cambridge University Press, 2005.
2. G. Bansal, J. Hossain, and V. K. Bhargava, "Adaptive power loading for OFDM-based cognitive radio systems," in Proc. of IEEE ICC'07, pp. 5137-5142, June 2007.
3. P. Wang, M. Zhao, L. Xiao, S. Zhou, and J. Wang, "Power allocation in OFDM-based cognitive radio systems," in Proc. of IEEE Globecom'07, pp. 4061-4065, Nov. 2007.
4. S. Haykin, "Cognitive radio: Brain-empowered wireless communications," in IEEE Journal of Selected Areas in Communications, vol. 23, no. 2, pp. 201-220, Feb. 2005.
5. T. Weiss, and F. K. Jondral, "Spectrum pooling: An innovative strategy for the enhancement of spectrum efficiency," in IEEE Commun. Mag., vol. 42, no. 3, pp. S8-S14, Mar. 2004.
6. D. P. Palomar, and J. R. Fonollasa, "Practical algorithms for a family of waterfilling solutions," IEEE Transactions on Signal Processing, vol. 53, no. 2, pp. 686-695, Feb. 2005.
7. S. Boyd and L. Vandenberghe, Convex Optimization, Cambridge University Press, 2004.
8. Dimitri P. Bertsekas Nonlinear Programming, Athena Scientific, 2003.