Howtosignalprocessing
- Which one of the following is a characteristic of a random signal?
- Can a random signal be periodic?
- What are discrete time random signals?
- What is the difference between deterministic and random signal?
Which one of the following is a characteristic of a random signal?
A random, or stochastic signal is characterised by its lack of predictability. Unlike a deterministic signal whose value at any instant is known, the value of a random signal at any instant is not known and cannot be predicted from a knowledge of values at other past instants.
Can a random signal be periodic?
Most realistic signals are both random and periodic. Where Ns(⋅), denotes a normally distributed random variable that evolves much slower than once every sample. For short segments, this signal is approximately periodic but because of the random phase, it never quite is periodic.
What are discrete time random signals?
A discrete-time signal is a sequence of values that correspond to particular instants in time. The time instants at which the signal is defined are the signal's sample times, and the associated signal values are the signal's samples.
What is the difference between deterministic and random signal?
Signals that can be modeled exactly by a mathematical formula are known as deterministic signals. Deterministic signals are not always adequate to model real-world situations. Random signals, on the other hand, cannot be described by a mathematical equation; they are modeled in probabilistic terms.
