TY - GEN
T1 - A two-step TOA estimation method based on energy detection for IR-UWB sensor networks
AU - Zhang, Tingting
AU - Zhang, Qinyu
AU - Zhang, Naitong
PY - 2009
Y1 - 2009
N2 - In order to design a low-computational time of arrival (TOA) estimation algorithm for the ultra wideband (UWB) based wireless sensor networks, a two-step TOA estimation method which focuses on the direct path (DP) component based on energy detection is proposed in this paper. The first step is to determine which energy block the DP locates by generalized likelihood ratio test (GLRT). During the second step, the precise position of DP within the detected energy block is obtained by maximum likelihood (ML) estimation. A mathematical model is set up for this two-step method which is verified by the simulation results, and system parameters that affect the performance are studied by analytical and numerical methods. The results compared with traditional ranging algorithms also show that this method can achieve relative high performance under low complexity conditions.
AB - In order to design a low-computational time of arrival (TOA) estimation algorithm for the ultra wideband (UWB) based wireless sensor networks, a two-step TOA estimation method which focuses on the direct path (DP) component based on energy detection is proposed in this paper. The first step is to determine which energy block the DP locates by generalized likelihood ratio test (GLRT). During the second step, the precise position of DP within the detected energy block is obtained by maximum likelihood (ML) estimation. A mathematical model is set up for this two-step method which is verified by the simulation results, and system parameters that affect the performance are studied by analytical and numerical methods. The results compared with traditional ranging algorithms also show that this method can achieve relative high performance under low complexity conditions.
UR - https://www.scopus.com/pages/publications/67650337041
U2 - 10.1109/CNSR.2009.30
DO - 10.1109/CNSR.2009.30
M3 - 会议稿件
AN - SCOPUS:67650337041
SN - 9780769536491
T3 - Proceedings of the 7th Annual Communication Networks and Services Research Conference, CNSR 2009
SP - 139
EP - 145
BT - Proceedings of the 7th Annual Communication Networks and Services Research Conference, CNSR 2009
T2 - 7th Annual Communication Networks and Services Research Conference, CNSR 2009
Y2 - 11 May 2009 through 13 May 2009
ER -