Hong TANG, Hongyan MOU, Haolan YANG. Time delay estimation algorithm of narrow band internet of things based on inter-cell interference cancellation[J]. Journal on Communications, 2019, 40(2): 92-101.
DOI:
Hong TANG, Hongyan MOU, Haolan YANG. Time delay estimation algorithm of narrow band internet of things based on inter-cell interference cancellation[J]. Journal on Communications, 2019, 40(2): 92-101. DOI: 10.11959/j.issn.1000-436x.2019038.
Time delay estimation algorithm of narrow band internet of things based on inter-cell interference cancellation
Aiming at the characteristics of NB-IoT such as low power consumption
low cost and low sampling rate
an NB-IoT delay estimation algorithm based on inter-cell interference cancellation was proposed.To gradually eliminate the interaction between signals in each cell
an inter-cell iterative interference cancellation algorithm was considered.In each iteration
the idea of time-frequency cross-correlation overlapping was introduced on the basis of traditional correlation algorithms to break through the limitations of the sampling rate and further improve the accuracy of time delay estimation.At the same time
a first-arrival-path (FAP) searching algorithm based on noise threshold was used to suppress multipath effects.Through experimental simulation
the results show that the proposed algorithm can significantly improve the time delay estimation accuracy of NB-IoT on the basis of related algorithms.
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3GPP ETSI . LTE; evolved universal terrestrial radio access (E-UTRA);physical channels and modulation:3GPP TS 36.211 version 9.1.0 Release 9 [S ] . 2018 .
KNAPP C , CARTER G . The generalized correlation method for estimation of time delay [J ] . IEEE Transactions on Acoustics Speech &Signal Processing , 2003 , 24 ( 4 ): 320 - 327 .
SAARNISAARI H , . ML time delay estimation in a multipath channel [C ] // International Symposium on Spread Spectrum Techniques and Applications Proceedings , 1996 : 1007 - 1011 .
LI X , PAHLAVAN K . Super-resolution TOA estimation with diversity for indoor geolocation [M ] . IEEE Press , 2004 .
GU Y , GOODMAN N A . Information-theoretic compressive sensing kernel optimization and bayesian cramér–rao bound for time delay estimation [J ] . IEEE Transactions on Signal Processing , 2017 , 65 ( 17 ): 4525 - 4537 .
ZHANG Y B , ZHOU X W , ZHANG L . One NLOS-range-scaling location algorithm with LOS/NLOS identification [J ] . Journal of Electronic & Information Technology , 2006 , 28 ( 1 ): 108 - 111 .
MAO K J , WU J B , JIN H B , et al . Indoor localization algorithm for NLOS environment [J ] . Acta Electronica Sinica , 2016 , 44 ( 5 ): 1174 - 1179 .
HU S , BERG A , LI X , et al . Improving the performance of OTDOA based positioning in NB-IoT system [C ] // Globeoom 2017 . 2017 .
YE D , LU J Y , ZHU X J , et al . Generalized cross correlation time delay estimation based on improved wavelet threshold function [C ] // The 6th International Conference on Instrumentation &Measurement,Computer,Communication and Control . 2016 : 629 - 633 .
SUN H M , JIA R S , DU Q Q , et al . Cross-correlation analysis and time delay estimation of a homologous micro-seismic signal based on the Hilbert-Huang transform [J ] . Computers & Geosciences , 2016 , 91 ( C ): 98 - 104 .
LIU C , BAI Y C , ZHANG X G . Improved fractional time delay estimation method and its application [J ] . Journal of Data Acquisition &Processing , 2015 ( 6 ): 1279 - 1285 .
QIAN Y M . The application of correlation method in delay estimation [J ] . Journal of Data Acquisition & Processing , 1995 ( a1 ): 132 - 135 .
Chan Y T , Ho K C . A simple and efficient estimator for hyperbolic location [J ] . Signal Processing IEEE Transactions on , 1994 , 42 ( 8 ): 1905 - 1915 .
WENG F , YIN C , LUO T . Channel estimation for the downlink of 3GPP-LTE systems [C ] // Network Infrastructure and Digital Content,2010 2nd IEEE International Conference . 2010 : 1042 - 1046 .
BOHANUDIN S , ISMAIL M , HUSSAIN H . Simulation model and location accuracy for observed time difference of arrival (OTDOA) positioning technique in Third Generation system [C ] // 2010 IEEE Student Conference on Research and Development - Engineering:Innovation and Beyond . 2010 : 63 - 65 .
LIU S , HUANG J , LIU H , et al . An improving DV-hop algorithm based on multi communication radius [J ] . Chinese Journal of Sensors& Actuators , 2015 , 28 ( 6 ): 883 - 887 ,2017(4).
3GPP . OTDOA support for NB-IoT:TSG RAN WG1 R1-167323 [S ] . 2016 .
XU W , HUANG M , ZHU C , et al . Maximum likelihood TOA and OTDOA estimation with first arriving path detection for 3GPP LTE system [J ] . Transactions on Emerging Telecommunications Technologies , 2016 , 27 ( 3 ): 339 - 356 .