A MIMO-OFDM based location algorithm in LTE system

Author

Wei-bo Liang ; Jian-hua Peng ; Kai-zhi Huang

Author_Institution

Nat. Digital Switching Syst. Eng. & Technol. R&D Center, Zhengzhou, China

fYear

2013

fDate

23-25 May 2013

Firstpage

767

Lastpage

770

Abstract

In order to improve the location accuracy in “urban canyons” and indoor environments, a new algorithm based on MIMO-OFDM technique is proposed. Firstly, the error rate of the subcarriers in the OFDM signal is reduced by the transmitter diversity and maximum ratio combining in MIMO; and then the operation of cross-correlation between the received signal and reference signal is processed to obtain the time delay estimation; finally, we use the time delay to realize the location. The simulation results show that the location accuracy in proposed algorithm is improved about 25 m compared to the reference algorithm in the cumulative distribution probability of 90%.

Keywords

Long Term Evolution; MIMO communication; OFDM modulation; correlation methods; delay estimation; diversity reception; probability; radio direction-finding; radio receivers; radio transmitters; signal processing; MIMO-OFDM based location algorithm; TE system; cross-correlation operation; cumulative distribution probability; indoor environment; maximum ratio combining; received signal processing; reference signal processing; subcarriers error rate; time delay estimation; transmitter diversity; urban canyon; Bandwidth; MIMO; OFDM; LTE System; Location Accuracy; MIMO; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Software Engineering and Service Science (ICSESS), 2013 4th IEEE International Conference on

Conference_Location

Beijing

ISSN

2327-0586

Print_ISBN

978-1-4673-4997-0

Type

conf

DOI

10.1109/ICSESS.2013.6615418

Filename

6615418