A weighted selection combining scheme for cooperative spectrum prediction in cognitive radio networks

作     者：Li Xi Song Tiecheng Zhang Yueyue Chen Guojun Hu Jing 李茜;宋铁成;章跃跃;陈国骏;胡静

作者机构：National Mobile Communications Research LaboratorySoutheast UniversityNanjing 210096China 

基　　金：The National Natural Science Foundation of China(No.61771126,61372104) the Science and Technology Project of State Grid Corporation of China(o.SGRIXTKJ 349) 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2018年第34卷第3期

页      码：281-287页

摘      要：A weighted selection combining （WSC） scheme is proposed to improve prediction accuracy for cooperative spectrum prediction in cognitive radio networks by exploiting spatial diversity. First, a genetic algorithm-based neural network （GANN） is designed to perform spectrum prediction in consideration of both the characteristics of the primary users （PU） and the effect of fading. Then, a fusion selection method based on the iterative self-organizing data analysis （ISODATA） algorithm is designed to select the best local predictors for combination. Additionally, a reliability-based weighted combination rule is proposed to make an accurate decision based on local prediction results considering the diversity of the predictors. Finally, a Gaussian approximation approach is employed to study the performance of the proposed WSC scheme, and the expressions of the global prediction precision and throughput enhancement are derived. Simulation results reveal that the proposed WSC scheme outperforms the other cooperative spectrum prediction schemes in terms of prediction accuracy, and can achieve significant throughput gain for cognitive radio networks.

主 题 词：cognitive radio network cooperative spectrumprediction genetic algorithm-based neural network iterativeself-organizing data analysis algorithm weighted selectioncombining 

学科分类：0810[工学-土木类] 08[工学] 081001[081001] 

核心收录：

D　O　I：10.3969/j, issn. 1003 -7985.2018.03.001

馆 藏 号：203378136...