{"id":470,"date":"2021-10-19T13:29:25","date_gmt":"2021-10-19T07:59:25","guid":{"rendered":"https:\/\/www.tescaglobal.com\/blog\/?p=470"},"modified":"2022-10-19T09:42:53","modified_gmt":"2022-10-19T04:12:53","slug":"frequency-modulation","status":"publish","type":"post","link":"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/","title":{"rendered":"Frequency Modulation and Demodulation"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_68 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a0514251162d\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a0514251162d\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Modulation\" title=\"Modulation:\">Modulation:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Demodulation\" title=\"Demodulation:\">Demodulation:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#1_Frequency_Modulation\" title=\"1. Frequency Modulation:&nbsp;\">1. Frequency Modulation:&nbsp;<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Why_is_Frequency_Modulation_Used\" title=\"Why is Frequency Modulation Used?\">Why is Frequency Modulation Used?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Frequency-Shift_Keying_FSK\" title=\"Frequency-Shift Keying (FSK):\">Frequency-Shift Keying (FSK):<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#What_makes_FM_a_superior_modulation_to_AM\" title=\"What makes FM a superior modulation to AM?\">What makes FM a superior modulation to AM?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#What_are_the_disadvantages_of_Frequency_modulation_over_Amplitude_modulation\" title=\"What are the disadvantages of Frequency modulation over Amplitude modulation?\">What are the disadvantages of Frequency modulation over Amplitude modulation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#2_Delta_modulation\" title=\"2. Delta modulation:\">2. Delta modulation:<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Things_to_know_about_Delta_Modulation\" title=\"Things to know about Delta Modulation:\">Things to know about Delta Modulation:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#3_Amplitude_Modulation\" title=\"3. Amplitude Modulation:\">3. Amplitude Modulation:<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Amplitude-Shift_KeyingASK\" title=\"Amplitude-Shift Keying(ASK):\">Amplitude-Shift Keying(ASK):<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#4_Phase_Modulation_PM\" title=\"4. Phase Modulation (PM):\">4. Phase Modulation (PM):<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#How_Phase_Modulation_is_differ_from_Frequency_Modulation\" title=\"How Phase Modulation is differ from Frequency Modulation:\">How Phase Modulation is differ from Frequency Modulation:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Phase-Shift_KeyingPSK\" title=\"Phase-Shift Keying(PSK):\">Phase-Shift Keying(PSK):<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Frequent_Asked_Questions\" title=\"Frequent Asked Questions\">Frequent Asked Questions<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#Q_What_are_the_uses_of_Modulation_and_Demodulation\" title=\"Q: What are the uses of Modulation and Demodulation?\">Q: What are the uses of Modulation and Demodulation?<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#1_Uses_of_Modulation_and_Demodulation_in_Networking\" title=\"1. Uses of Modulation and Demodulation in Networking:\">1. Uses of Modulation and Demodulation in Networking:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.tescaglobal.com\/blog\/frequency-modulation\/#2_Utility_of_Modulation_and_demodulation_in_an_information_exchange_system\" title=\"2. Utility of Modulation and demodulation in an information exchange system:\">2. Utility of Modulation and demodulation in an information exchange system:<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p>Have you ever wondered why we need to use frequency modulation while transmitting signals?<\/p>\n\n\n\n<p>Of Course, you have. So let us find it here in this informative and authentic article.&nbsp;<\/p>\n\n\n\n<p>Modulation and demodulation are the processes of encoding and decoding a message, respectively. Lets deep dive into these:<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Modulation\"><\/span><strong>Modulation:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Modulation is a process of converting a baseband message signal into a continuous waveform called a modulated signal.&nbsp;<\/p>\n\n\n\n<p>It is a method used to encode a message signal (frequency) onto a carrier wave. The message is usually an audio signal such as speech or music which information is represented by varying characteristics of the carrier, such as amplitude, frequency, phase, duration, etc.<\/p>\n\n\n\n<p>It is required in any information system, including telecommunication, to transfer information from one place to another.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Demodulation\"><\/span><strong>Demodulation:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Demodulation is the process of undoing the Modulation. It is brought into use to retain the original information from a modulated signal. <\/p>\n\n\n\n<p>Frequency demodulation focuses on extracting the information contained in a modulated signal. It focuses on information such as audio or video by exploiting the frequency-selective nature of the demodulator. <\/p>\n\n\n\n<p>The same principle underpins both AM and FM receivers. Frequency demodulation is an essential process in telecommunication engineering. It involves converting a signal from one frequency to another frequency.<\/p>\n\n\n\n<h1><span class=\"ez-toc-section\" id=\"1_Frequency_Modulation\"><\/span>1. <strong>Frequency Modulation:&nbsp;<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p>The frequency modulation technique is used in computing, radio broadcasting, single processing, telecommunications. <\/p>\n\n\n\n<p>It is widely used in radio broadcasting. Modulation has a larger signal-to-noise ratio in radiofrequency, which rejects radio frequency interference and has better or equal power amplitude modulation. <\/p>\n\n\n\n<p>Most music is broadcast over FM radio for this reason. Frequency modulation is also used in telemetry, radar, EEG, two-way radio systems, seismic prospecting, magnetic-tape recording system, video transmission system, and sound synthesis.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Frequency Modulation &amp; Demodulation Trainer - Tesca 40502\" width=\"770\" height=\"433\" src=\"https:\/\/www.youtube.com\/embed\/DeJzfa8GDJc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"Why_is_Frequency_Modulation_Used\"><\/span><strong>Why is Frequency Modulation Used?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Converting the signal into digital form is often desirable when you need to send analog signals over long distances. You can do it with an A\/D converter. <\/p>\n\n\n\n<p>But if the frequency of the original signal is high, an A\/D converter will not function. The lack of function is that it takes time for A\/D converters to sample and digitize the analog signal. <\/p>\n\n\n\n<p>Frequency modulation, or FM, encodes an information signal by varying the instantaneous frequency of a carrier wave. This modulation technique is used, for example, in radio transmission and magnetic tape-recording systems. <\/p>\n\n\n\n<p>It has several applications. For example, it is used to modulate the frequency of a signal in FM broadcasting.<\/p>\n\n\n\n<p>Frequency modulation is a commonly used technique in digital data transmission. <\/p>\n\n\n\n<p>In frequency modulation, the message to be transmitted is converted into an analog signal. This analog signal or audio message is then passed through a carrier wave whose frequency varies concerning time. <\/p>\n\n\n\n<p>The result is a modulated RF signal receiving and demodulating at the receiver to recover the original audio message.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/www.tescaglobal.com\/product\/frequency-modulation-and-demodulation-trainer\" target=\"_blank\" rel=\"noreferrer noopener\">Tesca Global Frequency Modulation and Demodulation Trainer Kit:<\/a><\/strong><\/p>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"Frequency-Shift_Keying_FSK\"><\/span><strong>Frequency-Shift Keying<\/strong> (FSK): <span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>It conveys data by changing or shifting an analog signal&#8217;s carrier frequency. FSK is widely used for transmitting information via radio signals. <\/p>\n\n\n\n<p>Frequency-shift Keying is a digital modulation scheme in which information is transmitted through discrete frequency changes of a carrier wave. It converts digital data into an analog signal and back again. It is also known as Shift Keying.&nbsp;<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"What_makes_FM_a_superior_modulation_to_AM\"><\/span><strong>What makes FM a superior modulation to AM?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Here are some of the advantages of Frequency Modulation over Amplitude Modulation:<\/p>\n\n\n\n<p>\u2b9a Frequency modulation is a communication technique that uses the frequency of the carrier signal to convey information. The main advantage of frequency modulation is that it allows you to send information that would be impractical to send using direct current (DC).&nbsp;<\/p>\n\n\n\n<p>\u2b9a Frequency modulation (FM) is a form of signal modulation that conveys information by changing the frequency of a carrier wave. It contrasts with amplitude modulation as in this, the amplitude of the carrier is changed. Whereas in phase modulation, its phase is varied.&nbsp;<\/p>\n\n\n\n<p>\u2b9a Frequency modulation is used for both radio broadcasting and telecommunication. The most well-known use of FM broadcasting is in the Radio Data System (RDS).<\/p>\n\n\n\n<p>\u2b9a The transmitted power used in frequency modulation is prone to be utilized, whereas, in amplitude modulation, the transmitted power in the carrier doesn&#8217;t contain information.<\/p>\n\n\n\n<p>\u2b9a In comparison to amplitude modulation, frequency modulation amplitude is constant.<\/p>\n\n\n\n<p>\u2b9a Noise in frequency modulation is reduced with the help of the amplitude limiters that help remove the amplitude variation caused by noise. But that&#8217;s not the case with Amplitude Modulation as it cannot use amplitude limiters.<\/p>\n\n\n\n<p>\u2b9a The noise in frequency modulation can further remove by using the deviation and increasing it, which is not feasible in the amplitude modulation.<\/p>\n\n\n\n<p>\u2b9a When frequency modulation is more than two Signals, it will receive the stronger one and eliminate the weaker signal. In amplitude modulation, it will receive the sign with the same frequency, which will lead to interferences as both the signals will be modulated.<\/p>\n\n\n\n<p>\u2b9a The noise in frequency modulation is canceled by using the VHF and UFH.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"What_are_the_disadvantages_of_Frequency_modulation_over_Amplitude_modulation\"><\/span><strong>What are the disadvantages of Frequency modulation over Amplitude modulation<\/strong>?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u2b9a Frequency modulation has an infinite number of sidebands virus Amplitude Modulation has only two.<\/p>\n\n\n\n<p>\u2b9a In comparison to amplitude modulation, the channel bandwidth of Frequency modulation is higher.<\/p>\n\n\n\n<p>\u2b9a In contrast to Amplitude Modulation, the design of the frequency transmitter is rather complex. Amplitude Modulation transmitter and receiver design are simple.<\/p>\n\n\n\n<p>\u2b9a Compared with Amplitude Modulation, the types of equipment used in frequency modulation transmission and reception are complicated and expensive.<\/p>\n\n\n\n<p>\u2b9a In comparison to amplitude modulation, the reception of the line of sight and the reception area are smaller in frequency modulation.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"2_Delta_modulation\"><\/span><strong>2. Delta modulation<\/strong>:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>For an immediate transmission of acoustic signals(mainly), a conversion of analog to digital and digital to analog takes place and is most commonly referred to as delta modulation.<\/p>\n\n\n\n<p>Delta modulation is not always about quality.&nbsp;<\/p>\n\n\n\n<p><a href=\"https:\/\/www.tescaglobal.com\/blog\/delta-modulation-demodulation\/\" target=\"_blank\" rel=\"noreferrer noopener\">Learn More: Delta Modulation &amp; Demodulation.<\/a><\/p>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"Things_to_know_about_Delta_Modulation\"><\/span><strong>Things to know about Delta Modulation<\/strong>:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul>\n<li>Delta modulation is a complex representation of surge and plunge in the amplitude of a received or sent signal.<\/li>\n\n\n\n<li>To achieve the desired signals, oversampling skills are often used.<\/li>\n\n\n\n<li>It is appraised as a series of different segments.<\/li>\n\n\n\n<li>Only the increase and decrease in amplitude of the object needs reading in delta modulation.<\/li>\n<\/ul>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"3_Amplitude_Modulation\"><\/span><strong>3. Amplitude Modulation<\/strong>:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Amplitude modulation (also known as AM or amplitude shift keying) is a widely used encoding information. <\/p>\n\n\n\n<p>The amplitude of the carrier wave is varied in proportion to the message signal being transmitted. It is helpful in sending signals over a transmission medium. <\/p>\n\n\n\n<p>In an AM system, the amplitude of the carrier signal is varied in proportion to the amplitude of the modulating signal. It is commonly used for telecommunications and can also carry data on the AC power lines.<\/p>\n\n\n\n<p>It is used for both analog and digital signals. This type of Modulation is used for increasing the range, or bandwidth, of a radio signal. <\/p>\n\n\n\n<p>It works by varying the amplitude (or height) of the carrier wave under the audio signal to be transmitted.&nbsp;<\/p>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"Amplitude-Shift_KeyingASK\"><\/span><strong>Amplitude-Shift Keying(ASK)<\/strong>:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Amplitude-shift Keying (ASK) is a digital signaling method that transfers data on a communications channel such as a wire, optical fiber, or radio. <\/p>\n\n\n\n<p>It represents digital data as variations in the amplitude of a carrier wave; more precisely, it means the state of the signal as two discrete levels, which are identified by differing amplitudes representing 0 and 1. <\/p>\n\n\n\n<p>It is a type of Modulation that conveys information by changing (or modulating) the amplitude of one or more carrier waves. <\/p>\n\n\n\n<p>A small amount shifts the frequency of each carrier wave. This shift is known as the modulation depth.&nbsp;<\/p>\n\n\n\n<p> It is a digital modulation scheme that sends data by rapidly switching between two or more distinct signals. <\/p>\n\n\n\n<p>It forms part of the more prominent family of phase-shift keying techniques developed in the 20th century. Amplitude-Shift Keying is a modulation scheme used in digital transmission to send data by changing the amplitude of a sinusoidal carrier wave. <\/p>\n\n\n\n<p>It is one of the oldest and simplest forms of digital Modulation and has been used in telecommunication and data communication applications since forever.&nbsp;<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"4_Phase_Modulation_PM\"><\/span><strong>4. Phase Modulation (PM)<\/strong>:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Phase modulation (PM) is a form of signal modulation where the carrier wave phase is varied under the modulating signal. <\/p>\n\n\n\n<p>The receiver can use this phase information to recover the original message signal. <\/p>\n\n\n\n<p>Phase modulation is used in many communications systems, including cell phones and cordless phones, Digital Audio Broadcasting (DAB), Digital Radio Mondiale (DRM), etc. It conveys information by varying the carrier wave phase, while frequency modulation (FM) involves changing the frequency.&nbsp;<\/p>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"How_Phase_Modulation_is_differ_from_Frequency_Modulation\"><\/span><strong>How Phase Modulation is differ from Frequency Modulation:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>If we compare phase modulation with frequency modulation, the difference is that in phase modulation, we do not vary the frequency of the carrier wave but its phase. <\/p>\n\n\n\n<p>The phase modulation technique goes to the stage of the carrier wave under the message being sent. It can be used as a form of digital communication that changes the length, speed, and pauses between radio waves or light pulses. <\/p>\n\n\n\n<p>Phase modulation can be used for amplitude modulation, frequency modulation, and phase-shift keying modulation.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Phase Shift Keying Modulation &amp; Demodulation PSK Trainer - Tesca 40507\" width=\"770\" height=\"433\" src=\"https:\/\/www.youtube.com\/embed\/xuYzGNdWyTk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"Phase-Shift_KeyingPSK\"><\/span><strong>Phase-Shift Keying<\/strong>(PSK):<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>In this modulation scheme, data is conveyed by changing or modulating the phase of a reference signal. <\/p>\n\n\n\n<p>PSK modulates a continuous wave (CW) carrier wave with an information signal and is distinct from amplitude-shift Keying, phase-shift keying, and frequency-shift Keying. It is used for sending information over a communications channel. <\/p>\n\n\n\n<p>PSK modulates the phase of a reference signal which is generated independently of the data being sent. PSK is distinct from on-off Keying because it uses a sinusoidal carrier wave versus an on\/off-keyed carrier wave.&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h4 class=\"has-text-align-center\"><span class=\"ez-toc-section\" id=\"Frequent_Asked_Questions\"><\/span><strong><span style=\"text-decoration: underline;\"><mark style=\"background-color:#ffffff;color:#e43023\" class=\"has-inline-color\">Frequent Asked Questions<\/mark><\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Q_What_are_the_uses_of_Modulation_and_Demodulation\"><\/span>Q: What are the u<strong>ses of Modulation and Demodulation<\/strong>?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"1_Uses_of_Modulation_and_Demodulation_in_Networking\"><\/span>1. Uses of <strong>Modulation and Demodulation in Networking:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Modulation and Demodulation in Networking are converting digital data to analog form for transmission over a communication channel and then reconverting it back to digital format at the receiving end.&nbsp;<\/p>\n\n\n\n<p>Modem means modulation\/demodulation; hence modulation &amp; demodulation in networking collectively are also called modem. <\/p>\n\n\n\n<p>Modulation is the process of varying one or more properties of a periodic waveform, also known as the carrier signal, which transmits the information found in the modulating sign.&nbsp;<\/p>\n\n\n\n<h4><span class=\"ez-toc-section\" id=\"2_Utility_of_Modulation_and_demodulation_in_an_information_exchange_system\"><\/span><strong>2. Utility of Modulation and demodulation in an information exchange system<\/strong>:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>There are plenty of reasons why we should go for frequency modulation and demodulation. For instance, if you want to transmit a video without interruption and interference, this is one of the best alternatives available. <\/p>\n\n\n\n<p>It also saves a lot of power and energy as compared to other forms of transmission. Modulation and demodulation encodes a message to be sent over a transmission medium and then decodes it at the receiving end.&nbsp;<\/p>\n\n\n\n<p>It is about manipulating and processing electromagnetic radio frequency signals to convert the message into digital and analog format. <\/p>\n\n\n\n<p>This process is an essential part of the information system as it converts analog signals to a digital signal and digital signals to an analog signal.<\/p>\n\n\n\n<p>The central concept of Modulation and demodulation is that any information signal can be modulated by using different types of carrier waves to carry the information that we need to send. <\/p>\n\n\n\n<p>This method proves to be very helpful in the inefficient transfer of data between two points that are distant from each other. Transmission of the information in a reliable manner, error detection, and correction is the most common uses of Modulation.<\/p>\n\n\n\n<p>The analog to digital and digital to analog conversion is the most used method and has a wide application in various forms. And that&#8217;s when a delta modulation program comes in.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Have you ever wondered why we need to use frequency modulation while transmitting signals? Of Course, you have. So let us find it here in this informative and authentic article.&nbsp; Modulation and demodulation are the processes of encoding and decoding a message, respectively. Lets deep dive into these: Modulation: Modulation is a process of converting [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":473,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[],"_links":{"self":[{"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/posts\/470"}],"collection":[{"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/comments?post=470"}],"version-history":[{"count":0,"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/posts\/470\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/media\/473"}],"wp:attachment":[{"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/media?parent=470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/categories?post=470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tescaglobal.com\/blog\/wp-json\/wp\/v2\/tags?post=470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}