Abstract
Time-variant systems are of general interest, because they play an important role in communications due to the emerging wireless networks for in-house and outdoor applications. As a matter of fact, a wireless channel can change its parameters with time depending on the position of the mobile transmitter, the receiver, and on the change of the surroundings. During the education of electrical engineers, the main focus is on time-invariant systems and the topic of time-variant systems is not always strongly alluded. Thus, also from this perspective, a general view of time-variant systems and their mathematical description is favorable.
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Notes
- 1.
Please note that several authors of later literature denote \(g(t,\tau )\) bewildered as impulse response.
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Speidel, J. (2019). Introduction and Some History. In: Introduction to Digital Communications. Signals and Communication Technology. Springer, Cham. https://doi.org/10.1007/978-3-030-00548-1_9
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DOI: https://doi.org/10.1007/978-3-030-00548-1_9
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