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##### Asked by: Spaska Epifani

science physics# Why Fourier series is used in communication engineering?

Last Updated: 2nd May, 2020

**Communication engineering**mainly deal withsignalsand hence signals are of various type likecontinues,discrete,periodic,non-periodic and many of many types.Now

**Fourier transform**helps us to converted time domainsignalin frequency domain. Because it allows us to extract thefrequencycomponents of a signal.

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Also asked, what is Fourier series used for?

Basically, **fourier series** is **usedto**represent a periodic signal in terms of cosine andsinewaves.

Subsequently, question is, why do we use Fourier series and Fourier transform? The **Fourier series is used** to represent aperiodicfunction by a discrete sum of complex exponentials, whilethe**Fourier transform is** then **used** to represent ageneral,nonperiodic function by a continuous superposition orintegral ofcomplex exponentials.

Subsequently, one may also ask, why Fourier transform is used in communication?

In the theory of **communication** a signalisgenerally a voltage, and **Fourier transform** isessentialmathematical tool which provides us an inside view ofsignal andits different domain, how it behaves when it passesthrough various**communication** channels, filters, andamplifiers and it alsohelp in analyzing various

What are the types of Fourier series?

Four different **forms of Fourier transform**.Allpreviously discussed **Fourier series** expansionsandtransforms of various **types** of signals (periodic,aperiodic,continuous, discrete) can be considered as different**forms**(special cases) of the same **Fourier transform**,and therebyunified.