A MULTI-RESOLUTION SPECTRUM SENSING (MRSS) SCHEME UNDER MEASUREMENT-BASED CHANNEL MODELS IN COGNITIVE RADIO  

作　　者：Gou Tianhang Sun Kun Li Yingzhe Li Pengpeng Wang Ping 

机构地区：[1]Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Science, Shanghai 200050,China

出　　处：《Journal of Electronics(China)》2010年第5期639-646,共8页电子科学学刊（英文版）

基　　金：Supported by the National Major R&D Program of China (No. 2009ZX03003-008)

摘　　要：Spectrum sensing is one of the key technologies in Cognitive Radios(CRs).Previous works are accomplished under simple channel models,which may lead to unreliable results when it applied to the over-the-air systems.In this paper,we investigate the performance of a Multi-Resolution Spectrum Sensing(MRSS) algorithm under measurement-based channel models in China.MRSS is a wavelet based algorithm which is suitable for non-stationary,wideband signal analysis.Using statistical mod-eling,measurement-based channel models are presented under typical urban and suburban scenarios in Shanghai,China.Then,the performance of the MRSS algorithm is evaluated under the measure-ment-based channel models.Simulation results show that,using MRSS,the performance is always better in the scenarios where Line-Of-Sight(LOS) path exist;also,in LOS scenarios,rich scattering effect helps to increase the performance.Spectrum sensing is one of the key technologies in Cognitive Radios（CRs）.Previous works are accomplished under simple channel models,which may lead to unreliable results when it applied to the over-the-air systems.In this paper,we investigate the performance of a Multi-Resolution Spectrum Sensing（MRSS） algorithm under measurement-based channel models in China.MRSS is a wavelet based algorithm which is suitable for non-stationary,wideband signal analysis.Using statistical mod-eling,measurement-based channel models are presented under typical urban and suburban scenarios in Shanghai,China.Then,the performance of the MRSS algorithm is evaluated under the measure-ment-based channel models.Simulation results show that,using MRSS,the performance is always better in the scenarios where Line-Of-Sight（LOS） path exist;also,in LOS scenarios,rich scattering effect helps to increase the performance.

关 键 词：Spectrum sensing Cognitive Radio (CR) MULTI-RESOLUTION Measurement-based channel 

分 类 号：TN92[电子电信—通信与信息系统]