Wang Jian-hui, Cheng Le-ran, Hu Han-ying . A New Algorithm to Mitigate NLOS Errors in Cellular Networks[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1424-1427. doi: 10.3724/SP.J.1146.2006.01471
Citation:
Wang Jian-hui, Cheng Le-ran, Hu Han-ying . A New Algorithm to Mitigate NLOS Errors in Cellular Networks[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1424-1427. doi: 10.3724/SP.J.1146.2006.01471
Wang Jian-hui, Cheng Le-ran, Hu Han-ying . A New Algorithm to Mitigate NLOS Errors in Cellular Networks[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1424-1427. doi: 10.3724/SP.J.1146.2006.01471
Citation:
Wang Jian-hui, Cheng Le-ran, Hu Han-ying . A New Algorithm to Mitigate NLOS Errors in Cellular Networks[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1424-1427. doi: 10.3724/SP.J.1146.2006.01471
The Non-Line-Of-Sight (NLOS) error is the main difficulty for mobile user location in cellular wireless communication system. An accurate and unbiased estimation approach using Probability Density Function (PDF) estimator and biased Kalman filter is presented to mitigate the NLOS error in this paper. The simulation results indicate that with the less prior information about communication environments, the approach has a better location performance even in severe NLOS situations.
范平志, 邓平, 刘林. 蜂窝网无线定位. 2002 年12 月第一版.北京: 电子工业出版社: 80-81.[2]Wylie M P and Holtzman J. The Non-line-of-sight problemsin mobile location estimation. IEEE International Conferenceon Universal Personal Communication, BostonMassachusetts USA, 1996: 827-831.[3]Borras J and Hatrack P. Decision theoretic framework forNLOS identification. IEEE Vehicular Technology conference,Ottawa Canada, 1998, Vol.2: 1583-1587.[4]Cong L and Zhuang W. Nonline-of-sight error mitigation inTDOA mobile location. Proc. IEEE Globecom 2001, SanAntonio, USA, 2001: 680-684.[5]Caffery J and Stuber G. Subscriber location in CDMAcellular networks[J].IEEE Trans. on Vehicular Technology.1998,47(5):406-416[6]Chen P C. A non-line-of-sight error mitigation algorithm inlocation estimation[J].IEEE Wireless Communications andNetworking Conference (WCNC99), New Orleans, USA.1999, Vol.1:316-320[7]黄凤岗, 宋克欧. 模式识别. 1998 年第一版. 哈尔滨: 哈尔滨工程大学出版社: 23-24.[8]张贤达. 现代信号处理. 2002 年10 月第二版. 北京: 清华大学出版社: 177-184.[9]Thomas N J.[J].Cruickshank D G M, and Laurenson D I. Arobust location estimator architecture with biased Kalmanfilter of TOA data for wireless systems. IEEE 6thInt.Sypm.on Spread-Spectrum Tech. Appli NJIT,NewJersey, USA.2000,:-[10]Bao Long Le, Kazi Ahmed, and Hiroyuki Tsuji. Mobilelocation estimator with NLOS mitigation using Kalmanfiltering. Wireless Communication and NetworkingConference, New Orleans Louisiana USA, 2003 Vol.3:1969-1973.