Effects of transmitter-related parameter settings on ranging accuracy for IR-UWB systems  

作　　者：吴绍华 张钦宇 张乃通 

机构地区：[1]Shenzhen Graduate School, Harbin Institute of Technology [2]School of Electronics and Information Technology,Harbin Institute of Technology [3]School of Electronics and Information Technology, Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2010年第1期51-57,共7页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China (Grant No.60432040);the Natural Science Foundation of Guangdong Privince(Grant No.9451805707003235)

摘　　要：For impulse radio ultra-wideband (IR-UWB) ranging systems,effects of the settings of transmitter-related parameters, which include the pulse shape, the bandwidth and the pulse repetition interval (PRI), on ranging accuracy were studied through theoretical analysis and simulations. Both the match-filtering based coherent TOA estimation algorithm and the energy-detection based non-coherent algorithm were used during simulations. Results show that the pulse shape has the least effect on the ranging accuracy. Increasing the pulse bandwidth can improve the ranging performance, but the performance is hardly improved any more when the bandwidth is increased beyond a certain level. PRI should be set long enough to guarantee the accurate ranging, because when PRI is shorter than the maximum excess delay of the channel, the ranging accuracy will be deteriorated by inter-pulse interference.For impulse radio ultra-wideband （IR-UWB） ranging systems, effects of the settings of transmitter-related parameters, which include the pulse shape, the bandwidth and the pulse repetition interval （PRI）, on ranging accuracy were studied through theoretical analysis and simulations. Both the match-filtering based coherent TOA estimation algorithm and the energy-detection based non-coherent algorithm were used during simulations. Results show that the pulse shape has the least effect on the ranging accuracy. Increasing the pulse bandwidth can improve the ranging performance, but the performance is hardly improved any more when the bandwidth is increased beyond a certain level. PRI should be set long enough to guarantee the accurate ranging, because when PRI is shorter than the maximum excess delay of the channel, the ranging accuracy will be deteriorated by inter-pulse interference.

关 键 词：IR-UWB ranging TOA estimation algorithm parameter setting match-filtering energy-detection 

分 类 号：TN958[电子电信—信号与信息处理] V324.24[电子电信—信息与通信工程]