Subcarrier and Power Allocation Algorithm 
in Cognitive Radio Networks

doi:10.13190/jbupt.200804.102.014

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (4): 102-106.doi: 10.13190/jbupt.200804.102.014

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Subcarrier and Power Allocation Algorithm
in Cognitive Radio Networks

LU Qian-xi1, WANG Wen-bo1, FU Long2, WANG Wei1, PENG Tao1

1 .School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. Heilongjiang Company Daqing Branch, China Mobile Group, Daqing 163311, China)

Received:2007-12-20 Revised:1900-01-01 Online:2008-08-30 Published:2008-08-30
Contact: LU Qian-xi

Abstract

Abstract:

Under the constraints of interference temperature and total transmit power, an algorithm is proposed for the uplink in orthogonal frequency division multiple access（OFDMA）based cognitive radio networks to maximize the system throughput. With the algorithm, the initial allocation will be adjusted to achieve the optimal allocation step by step. The simulations show that the proposed algorithm achieves the performance of exhausted scheme while decreasing the computational complexity largely.

Key words: cognitive radio, resource allocation, water-filling algorithm, subcarrier allocation

CLC Number:

TN911.22

LU Qian-xi1, WANG Wen-bo1, FU Long2, WANG Wei1, PENG Tao1. Subcarrier and Power Allocation Algorithm
in Cognitive Radio Networks[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(4): 102-106.

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Subcarrier and Power Allocation Algorithm
in Cognitive Radio Networks

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Subcarrier and Power Allocation Algorithm in Cognitive Radio Networks

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Subcarrier and Power Allocation Algorithm
in Cognitive Radio Networks