A New Discrete Analytic Signal for Reducing Aliasing in the Discrete Wigner-Ville Distribution
IEEE Transactions on Signal Processing
The efficiency of real time sequences FFT computing
ECC'08 Proceedings of the 2nd conference on European computing conference
Improved discrete definition of quadratic time-frequency distributions
IEEE Transactions on Signal Processing
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Time-frequency distributions (TFDs) are computational costly to compute. This paper presents algorithms to reduce this computational load. Before we can compute the TFDs, however, we must define a discrete version of the TFD. Defining a discrete TFD (DTFD) is not a straightforward process--for example, a popular DTFD definition does not satisfy all desirable mathematical properties that are inherent to the TFD. In this paper, we define a new DTFD definition, the DTFD-C. This definition is closely related to another DTFD definition which we recently proposed, the DTFD-B. The DTFD-B and DTFD-C satisfy all desirable properties. We provide algorithms for both DTFD definitions. We find that the DTFD-C has the advantage: the DTFD-C requires only 50% of the computational load required to compute the DTFD-B.