DocumentCode :
3277531
Title :
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
Link To Document :
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