Optimization of Threshold for Energy Based Spectrum Sensing Using Differential Evolution

• 作者: K. Aravind Narayanan K.A Narayanankutty L. Sathiesh Kumar M. Maheshkumar P. Arun Shivaram Santhoshkumar. K
• 来源期刊: 无线工程与技术(英文)
• 学科: 医学
• 关键词: COGNITIVE RADIO SPECTRUM SENSING DIFFERENTIAL Evolution
• 年，卷（期）: wxgcyjsyw_2011,（3）
• 页码范围: 130-134
• 页数: 5页
• 分类号: R73

摘要

Interference threshold based on energy setting in cognitive radios is a non-convex optimization problem [4]. The convergence of optimization techniques like Genetic algorithm (GA) takes several iterations to fix this threshold. Here, an attempt made to use Differential evolution (DE) method for optimization after formulating the objective functions. The advantages with this method were three fold over GA. They were, a. A reduced number of iterations, b. Marginal improvement and consistency of throughput and c. Localization of the best solution. The comparative results are presented and discussed.