Subcarrier and Power Allocation Algorithm in Cognitive Radio Networks
Tao Peng · Beijing Youdian Xueyuan xuebao · 2008
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.