An Enhanced OTDOA Estimation Method for 3GPP LTE LoCation Service System 


Vol. 35,  No. 10, pp. 847-856, Oct.  2010


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  Abstract

In this paper, we propose an enhanced OTDOA (Observed Time Difference Of Arrival) estimation method for 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) LCS (LoCation Service) system. Recently, in 3GPP LTE, the use of PRS (Positioning Reference Signal) and associated standards were agreed to solve the near-far problem in OTDOA positioning method. Although we can achieve better performance by using a more consecutive PRS subframe, there is a performance boundary because the maximum number of consecutive PRS subframe is limited to 6 and the degradation of averaged CIR due to the Doppler effects. Therefore, in this paper, we propose an OTDOA estimation method based on CIR (Channel Impulse Response) and CIR variance weighting method which can obtain a time diversity gain, and verified that the proposed method has good performance and stable operation through extensive simulation.

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  Cite this article

[IEEE Style]

K. D. Kim, K. H. Won, J. H. Jang, H. Choi, "An Enhanced OTDOA Estimation Method for 3GPP LTE LoCation Service System," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 10, pp. 847-856, 2010. DOI: .

[ACM Style]

Keun Dae Kim, Kyung Hoon Won, Jun Hee Jang, and Hyung-Jin Choi. 2010. An Enhanced OTDOA Estimation Method for 3GPP LTE LoCation Service System. The Journal of Korean Institute of Communications and Information Sciences, 35, 10, (2010), 847-856. DOI: .

[KICS Style]

Keun Dae Kim, Kyung Hoon Won, Jun Hee Jang, Hyung-Jin Choi, "An Enhanced OTDOA Estimation Method for 3GPP LTE LoCation Service System," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 10, pp. 847-856, 10. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880