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论文类型： 期刊论文

发表时间： 2009-10-01

发表刊物： SIGNAL PROCESSING

收录刊物： SCIE、EI、Scopus

卷号： 89

期号： 10

页面范围： 1851-1863

ISSN号： 0165-1684

关键字： Wireless location estimation; TD-SCDMA; Time of arrival (TOA); Angle of arrival (AOA); Spatial-temporal channel model

摘要： TD-SCDMA is an innovative wireless radio standard for a physical layer 3G air interface, approved as one 3GPP standards by ITU in May 2000. Based on the unique advantages of the physical layer, this paper investigates network-based methods to obtain the angle of arrival (AOA) and time of arrival (TOA) via subspace tracking and channel impulsive estimation. By incorporating the spatial-temporal channel of radio propagation, this paper proposes a unified objective function to extract mobile location information from the statistical distribution of AOA and TOA data in a TD-SCDMA cellular network. The proposed method may estimate mobile position even using one base station. The location performances are analyzed in detail in macro-cell scenarios. This method can be easily extended to other networks except TD-SCDMA, provided that the statistical information of the local radio propagation channel is available as pre-knowledge. Simulation comparing several hybrid location methods in two macro-cell scenarios show that the proposed method has a high accuracy: but it has a relatively high complexity. (C) 2009 Elsevier B.V. All rights reserved.