Research Article
On Timing Offset and Frequency Offset Estimation in LTE Uplink
@INPROCEEDINGS{10.1007/978-3-642-29157-9_25, author={Juan Liu and Bin Wu and Pingan Li}, title={On Timing Offset and Frequency Offset Estimation in LTE Uplink}, proceedings={Wireless Communications and Applications. First International Conference, ICWCA 2011, Sanya, China, August 1-3, 2011, Revised Selected Papers}, proceedings_a={ICWCA}, year={2012}, month={5}, keywords={Channel estimation timing offset frequency offset LTE}, doi={10.1007/978-3-642-29157-9_25} }- Juan Liu
Bin Wu
Pingan Li
Year: 2012
On Timing Offset and Frequency Offset Estimation in LTE Uplink
ICWCA
Springer
DOI: 10.1007/978-3-642-29157-9_25
Abstract
In this paper, the timing offset and frequency offset estimation in LTE uplink is studied. The approaches proposed are based on the demodulation reference signals (DMRS) in PUSCH for FDD mode. With the channel estimation in the frequency domain at the receiver by using the two DMRS, i.e., DMRS located in two OFDM symbols, within one sub-frame, timing offset estimation is conducted by exploring the phase shift between different sub-carriers for each DMRS, while the frequency shift estimation is implemented by studying the phase rotation between the two DMRS for each sub-carrier. Statistical average is used to enhance the performance of estimation. Simulation results demonstrate that the proposed algorithms can offer satisfactory performance even at relatively low signal to noise ratios in the additive whiten Gaussian noise environments.
