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A multipath delay estimation model and algorithm in OFDM systems

Authors :
Ya-jun Chen
Kai-zhi Huang
Xiao-rui Gong
Jian-hua Peng
Source :
2014 4th IEEE International Conference on Information Science and Technology.
Publication Year :
2014
Publisher :
IEEE, 2014.

Abstract

In wireless location area, the estimation precision of the TOA (the time of arrival) is low because it underutilizes the time-frequency characteristics of the OFDM signal in the OFDM system. To solve this problem, in this paper, a multipath delay estimation model based on frequency domain phase offset (FDP-MDE) is proposed. And then, a grouped joint time delay estimation algorithm (GJ-TDE) is proposed according to features of the LTE system. Simulation results show that the root mean square error (RMSE) of the GJ-TDE algorithm is 5.5034m smaller than that of the synchronization algorithm under the condition that the signal-to-noise ratio (SNR) is 0dB and the sampling interval is 8.

Details

Database :
OpenAIRE
Journal :
2014 4th IEEE International Conference on Information Science and Technology
Accession number :
edsair.doi...........0b217e74b36eba03383b2be248c99cb6