TY - GEN
T1 - Instantaneous frequency estimation using an adaptive short-time fourier transform
AU - Kwok, Henry K.C.
AU - Jones, Douglas L.
N1 - Funding Information:
*This work was supported in part by the Joint Services Electronics Program, contract no. JSEP N00014-90-5-1270.
Publisher Copyright:
© 1995 IEEE.
PY - 1995
Y1 - 1995
N2 - Instantaneous frequency estimation is important in many applications, including FM demodulation. Time-frequency-based methods have been widely studied for IF estimation, particularly for low SNR, where they prove to be the most effective methods. We propose a new adaptive short-time Fourier transform algorithm, with chirping windows which is tailored for near-optimal time-frequency-based IF estimation. Extensive performance evaluations with both synthetic and real data demonstrate modest (1-2 dB) improvements in the threshold SNR over the best fixed-window STFTs. The computational cost of the new method is about ten times that of a fixed-window STFT.
AB - Instantaneous frequency estimation is important in many applications, including FM demodulation. Time-frequency-based methods have been widely studied for IF estimation, particularly for low SNR, where they prove to be the most effective methods. We propose a new adaptive short-time Fourier transform algorithm, with chirping windows which is tailored for near-optimal time-frequency-based IF estimation. Extensive performance evaluations with both synthetic and real data demonstrate modest (1-2 dB) improvements in the threshold SNR over the best fixed-window STFTs. The computational cost of the new method is about ten times that of a fixed-window STFT.
UR - http://www.scopus.com/inward/record.url?scp=85013593419&partnerID=8YFLogxK
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U2 - 10.1109/ACSSC.1995.540607
DO - 10.1109/ACSSC.1995.540607
M3 - Conference contribution
AN - SCOPUS:85013593419
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 543
EP - 547
BT - Conference Record of the 29th Asilomar Conference on Signals, Systems and Computers, ACSSC 1995
A2 - Singh, Avtar
PB - IEEE Computer Society
T2 - 29th Asilomar Conference on Signals, Systems and Computers, ACSSC 1995
Y2 - 30 October 1995 through 1 November 1995
ER -