scholarly journals FAST PARAMETER ESTIMATION ALGORITHM FOR CUBIC PHASE SIGNAL BASED ON QUANTIFYING EFFECTS OF DOPPLER FREQUENCY SHIFT

2013 ◽  
Vol 142 ◽  
pp. 57-74 ◽  
Author(s):  
Jibin Zheng ◽  
Tao Su ◽  
Qing Huo Liu ◽  
Long Zhang ◽  
Wentao Zhu
Keyword(s):  
Parameter Estimation ◽  
Frequency Shift ◽  
Doppler Frequency ◽  
Estimation Algorithm ◽  
Doppler Frequency Shift ◽  
Cubic Phase ◽  
Parameter Estimation Algorithm ◽  
Phase Signal

Joint Estimation with Time Delay and Doppler Frequency Shift in the Multi-Carrier Acoustic Communication

2012 ◽  
Vol 263-266 ◽  
pp. 994-999
Author(s):  
Jia Chun Zheng ◽  
Wen Xu ◽  
Jianwei Guo ◽  
Wei Dong Xie
Keyword(s):  
Time Delay ◽  
Frequency Shift ◽  
Acoustic Communication ◽  
Lower Order ◽  
Communication System ◽  
Doppler Frequency ◽  
Estimation Algorithm ◽  
Doppler Frequency Shift ◽  
Joint Estimation ◽  
Cycle Frequency

Timing synchronization is very important in the multi-carrier acoustic communication system. With regard to the transmitted signal of the baseband OFDM in the acoustic communication system, which is in the complex environment over the acoustic channel gauss noisy and SαS impulse noisy interference,this paper proposes a joint time delay and Doppler frequency shift estimation algorithm based on the fractional lower order cyclic cross ambiguity function with multi-cycle frequency(FCCAF). This method combines the fractional lower order moment with the feature of cycle stationary, and can detect the signal characteristic of cyclo-stationarity under the SaS impulse noisy. The algorithm takes full advantage of the cycle frequency information of the signal, and can be equipped with the capacity of suppression interference. The simulation results show that the algorithm proposed in this paper can work very well in the presence of the impulse noise and interference, the superior to that algorithm based on the second order cycle fuzzy function, and is a robust joint estimation algorithm with time delay and Doppler shift.

Rotational Doppler Frequency Shift from Time‐Evolving High‐Order Pancharatnam–Berry Phase: A Metasurface Approach

2021 ◽  
pp. 2000576
Author(s):  
Fuyong Yue ◽  
A. Aadhi ◽  
Riccardo Piccoli ◽  
Vincenzo Aglieri ◽  
Roberto Macaluso ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Berry Phase ◽  
Doppler Frequency ◽  
Doppler Frequency Shift ◽  
High Order
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