TY - JOUR
N2 - Based on real-time multi-domain communication signal analysis architecture, a high-efficiency blind carrier frequency estimation algorithm using the power spectrum symmetry of the measured modulated signal is presented. The proposed algorithm, which utilizes the moving averaged power spectrum achieved by the realtime spectrum analysis, iteratively identifies the carrier frequency in according to the power difference between the upper sideband and lower sideband, which is defined and revised by the estimated carrier frequency in each iteration. When the power difference of the two sidebands converges to the preset threshold, the carrier frequency can be obtained. For the modulation analysis, the measured signal can be coarsely compensated by the estimated result, and the residual carrier frequency error is eliminated by a following carrier synchronization loop. Compared with previous works, owing to the moving averaged power spectrum normalization and the smart iterative step variation mechanism for the two sidebands definition, the carrier frequency estimation accuracy and speed can be significantly improved without increasing the computational effort. Experimental results are included to demonstrate the outstanding performance of the proposed algorithm.
L1 - http://journals.pan.pl/Content/90244/PDF/Journal10178-VolumeXXI%20Issue2_09.pdf
L2 - http://journals.pan.pl/Content/90244
PY - 2014
IS - No 2
EP - 292
DO - 10.2478/mms-2014-0024
KW - carrier frequency estimation
KW - multi-domain communication
KW - signal analysis
A1 - Qian Wang
A1 - Xiaomei Yang
A1 - Xiao Yan
A1 - Kaiyu Qin
PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation
T1 - High-Efficiency Carrier Frequency Estimation Algorithm for Real-Time Multi-Domain Communication Signal Analysis
DA - 2014
SP - 281
UR - http://journals.pan.pl/dlibra/publication/edition/90244
T2 - Metrology and Measurement Systems
ER -