Finite-time-averaged power spectra and signal energy distribution in time and frequency (Corresp.)
- 1 January 1972
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Information Theory
- Vol. 18 (1) , 208
- https://doi.org/10.1109/tit.1972.1054734
Abstract
In response to a recent paper, this correspondence points out the difficulty of applying the concept of the energy distribution in time and frequency of deterministic signals to random signals and finite-time-averaged power spectra. For deterministic signals, an appropriately defined finite-time spectrum will indicate the frequency band within which the signal energy is concentrated at a particular time. However, it does not appear meaningful to apply such concepts to finite-time averages of random processes since taking sample averages would typically destroy any time-frequency distribution of the energy perhaps found in an individual sample of the process.Keywords
This publication has 2 references indexed in Scilit:
- Finite-time averaged power spectraIEEE Transactions on Information Theory, 1971
- Signal energy distribution in time and frequencyIEEE Transactions on Information Theory, 1968