There are three types of modulation: AM, FM, and PM. Single sideband suppressed carrier modulation and demodulation explained along with related theory in detail Coherent detector is used for demodulating ... having the same frequency and the phase of the carrier used in SSBSC modulation. This is lab 7 of 20 in the course. In this experiment, students will generate an SSB signal by implementing the mathematical model for the phasing method. Follow edited Apr 23 '20 at 14:04. rclocher3. THEORY: This experiment consists of 1. %PDF-1.5 To recover the modulating signal from the SSB-SC signal, we require a phase coherent or synchronous demodulator . Chapter 1 Experiment-8 1.1 Single Sideband Suppressed Carrier Mod-ulation 1.1.1 Objective This experiment deals with the basic of Single Side Band Suppressed Carrier (SSB − SC) modulation, and demodulation techniques for analog commu-nication. APPARATUS: 1. Using MATLAB m-file and simulink to implement FM modulation and demodulation. SSB FFT Modulation and Demodulation. The DSBSC modulated signal has two sidebands. The demodulation of DSB AM signal can be done either by using an envelope detector or by passing the amplitude modulated signal through a non-linear device. Amplitude Modulation and Demodulation (Real time experiment) Home; Project ; Workshop ; Nodal Centres . For the result in Table 1.1, the carrier signal amplitude V c, carrier frequency f c and the modulating signal frequency f m are set at 250 mVp-p, 100 … Thus, SSB modulation requires ... SSB Demodulation (cont.) Ex No:1 Date: AMPLITUDE MODULATION AND DEMODULATION Aim: 1. Also describe the practical steps to remove the distortion in PSK output. Analog Communication - SSBSC Modulation - In the previous chapters, we have discussed DSBSC modulation and demodulation. Build simple FM demodulator by using frequency discriminator 2. To study amplitude demodulation by linear diode detector 3. Experiment 3: Double Sideband Modulation (DSB) This experiment examines the characteristics of the double-sideband (DSB) linear modulation process. endobj List of Experiments 1. In this experiment, the AM, DSBSC and SSB modulation techniques are considered. Experiment # (5) DSB-SC and SSB Modulator Experiment theory: Figure 5-1 shows the wave forms of the amplitude modulation (AM). Apparatus Required: Name of the Specifications/Range Quantity Component/Equipment Transistor(BC 107) BC107 1 Diode(0A79) Max Current 35mA 1 %���� Read about spectrum analyzers. x��}[�7r�;#����v{���;ෑ4c��ϊ�w7f��E�����ְI)��yUE�������q�L$� ��ߟ>���/�O�)?�x��N�?��}�������'�}�����9���>}bj��dN��)��OS�/��?=O�W���+,e.���'�2��������f������h�_8�/���_5a�M%��wSލ0�j1Ls�E�"�b9��O�Ak�����*5���W��WH��"�L�ه��u�1M��A��Y-��N_����_��h�SJ���Z$��/"�Z������:T-}���|�κ)���_D�3`|w!� ��\���� �ٍ�ɴ?��A�:7�|��1��H�}����ߝ���ݵ�W�޿�6�����W�? Modulation is the process of transforming a baseband message to a form suitable for Fig.1 Power spectra for signals in the modulation and demodulation processes. SSB trainer kit 2. How it helps to achieve the SSB modulated signal. Also describe the practical steps to remove the distortion in PSK output. u and are the PAM experiment with sample, sample & hold and flat top output. The highest frequency that appears in the spectra of the modulated signal is To generate amplitude modulated wave and determine the percentage modulation. Two balanced modulators. ES442 Lab 6 Frequency Modulation and Demodulation !! As an instructor, you can create and edit instances of this course, assign them to students, and view student progress. R.F generator. SSB-SC Modulation & Demodulation 4. A.F … SSB demodulation basics. Build simple envelope detector for FM demodulation. 3 SSB-SC Modulator and Detector (Phase Shift Method) I. Since, the two sidebands carry the same information, there is no need to transmit both sidebands. LAB EXPERIMENT 5 PULSE AMPLITUDE MODULATION (PAM) & DEMODULATION Objectives • Understanding the principles of pulse amplitude modulation and demodulation using MATLAB Simulink. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 594.96 842.04] /Contents 4 0 R/Group<>/Tabs/S>> In SSB modulation experiment, a crystal band pass filter is used. 2. The following article gives an overview of the different methods for SSB demodulation and their use in software defined radios. 3. Pulse Amplitude Modulation & Demodulation 10.Time Division … 2. Read about using the FFT on theTektronix DPO 2000 series oscilloscopes manual. endobj Ii. A Fully Working ASK Scheme Can Be Converted To PSK Using CT3000. In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation used to transmit information, such as an audio signal, by radio waves.A refinement of amplitude modulation, it uses transmitter power and bandwidth more efficiently. 4 0 obj Figure 5-5(a) is the block diagram of SSB stream III. c�7v���2+�M�..4��� �?A��Ҝ]����MεkkM�8�. The student will learn the basic concepts of SSB modulation and using the theoretical knowledge of courses. Date Name of the Experiment Marks Staff SIGN . To study PLL 565 as frequency demodulator 5. Amplitude modulation produces an output signal the bandwidth of which is twice the … Thus, SSB modulation requires half the bandwidth of AM or DSBSC-AM modulation. To Demodulate the modulated wave using envelope detector. Instructor Resources available. This means that the … Frequency Division Multiplexing & Demultiplexing 5. Why? Faculty Survey ; Student Survey ; Contact us; Login. The demodulation of single-sideband (SSB) signals requires special attention, because simple mixing leads to superposition of the upper and lower sidebands at audio frequencies. How is this 'mirroring' modulation done in a transmitter and its demodulation done in a receiver? . It depends on the actual modulation type whether or not the spectra become similar with respect to shapes, symmetries, and bandwidths. Iii. Single Side Band Demodulation Objective: In this experiment we will observe SSB Demodulation The experiment is setup as per the above block diagram. In this experiment, students will generate an SSB signal by implementing the mathematical model for the phasing method. We will not be considering the transmission of data via SSB. This is known as the filter method. To study amplitude demodulation by linear diode detector 3. 2. SSB-SC modulator and detector 4. To study DSB/ SSB amplitude modulation & determine its modulation factor & power in side bands. Spectral Characteristics of AM &FM 8. Modulation passbandA Analog modulation AM FM PM QAM SM SSB Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PPM PSK QAM SC-FDE TCM WDM Hierarchical modulation QAM WDM Spread spectrum CSS DSS SFHSS THSS See also approach capability codes Demodulation … The demodulation of either DSB or AM can be accomplished by a coherent demodulator shown schematically in Fig ... (VSB) modulation. In this experiment, students will generate an SSB signal by implementing the mathematical model for the phasing method ; DEMODULATION OF SSB-SC SIGNAL Just like for the DSB-SC Signal, the demodulation of Product tLow Modulator s(t) Pass Filter Demodulated SSB-SC Signal output c(t) - Accos(2mf ct +0).. A effective communication may only be established if we have a proper and efficient tool for undergoing the modulation and demodulation procedures effectively. Radio modulation via wave amplitude Fig 1: An audio signal (top) can be carried by a vector signal using AM or FM methods. Why? Modulation is defined as the process of transmission of information such as images or videos on an electrical signal. ... 2- Implementation of SSB Modulation From equations (5-5) and (5-6), we know that the SSB modulator is the combination of two DSB-SC modulators. ... 2- Implementation of SSB Modulation From equations (5-5) and (5-6), we know that the SSB modulator is the combination of two DSB-SC modulators. How? Experiment 2: Amplitude Modulation and Demodulation Objective Amplitude modulation (AM) is one of the simplest methods for modulating a sinusoidal carrier wave. Why? The quality of the signal gets affected unless the SSB transmitter and receiver have an excellent frequency stability. To achieve this two main elements are required: SSB-SC Modulation & Demodulation 4. In the previous chapters, we have discussed DSBSC modulation and demodulation. APPARATUS: 1. Synchronous detector 5. SSB-SC, Single SideBand Suppressed Carrier 2. Verification of Sampling Theorem 9. INDEX Expt. asked Apr 19 '20 at 14:19. ii. Amplitude modulation and demodulation 2. A fully working ASK scheme can be converted to PSK using CT3000. ii. Amplitude modulation produces an output signal the bandwidth of … Olsonist Olsonist. The block diagram of the coherent SSB-SC demodulator is shown in fig.1 . How? CME312- LAB Manual DSB-SC Modulation and Demodulation Experiment 6 Experiment 2 DSB Objectives : By the end of this experiment, the student should be able to: 1. Experiment 4 SSBSC modulation and demodulation 53 A common method of generating SSB simply involves generating a DSBSC signal then using a filter to pick out and transmit only one of the sidebands. The student will learn the basic concepts of SSB modulation and using the theoretical knowledge of courses. Thefirst useof AM fortransmissionofvoice signalsbyradiocan be traced tothebeginning of the 20th century. 2. The process of recovery of modulating signal is called demodulation. To study DSB/ SSB amplitude modulation & determine its modulation factor & power in side bands. In this experiment, we shall consider demodulation using envelope detector. i) AM modulator with AWGN noise in Matlab. PO1, PO2 PSO1 Study of Spectrum Analyzer and Analysis of AM and FM Signals 1) A 3500 Hz audio tone amplitude modulates a 800 kHz carrier resulting in modulated signal having a percentage modulation of 85%. SSBSC Demodulator - The process of extracting an original message signal from SSBSC wave is known as detection or demodulation of SSBSC. Upon completion of the experi-ment… However, the two sidebands in a DSBSC signal are close together in frequency and so specialized filters must be used. Objective 1. The student will learn the basic concepts of SSB modulation and using the theoretical knowledge of courses. C.R.O (20MHz) 3. The demodulation is performed coherently and its strict requirement for a perfect synchronization to the carrier is discussed. 2. Spectral Characteristics of AM &FM 8. Coherent SSB Demodulation. The demodulation is performed coherently and its strict requirement for a perfect synchronization to the carrier is discussed. Demodulation is defined as the process of extracting this information. List of Experiments 1. �������]��ރ�oOP��3H��d����W�Z7�CXu��f���A�)����h3��qe9��Ŝ?1_}���T�H���?�+�y���WWۜ��eم�cg����u���|n��k�Q��Qm�kc�����16ܺ)�}��}yz� �x�7g�5�9Ʃ�}h�{hs� Experiment Program Outcomes Attained Program Specific Outcomes Attained 1 LTI system and its response PO1, PO2 PSO1 2 Amplitude modulation and demodulation PO1, PO2 PSO1 3 DSB-SC Modulator & Detector PO1, PO2 PSO1 4 SSB-SC Modulator & Detector (Phase Shift Method) PO1, PO2 PSO1, PSO2 5 Frequency modulation and demodulation. Understand the differences between swept frequency, FFT, and real-time spectrum Analyzers, as well as the term resolution bandwidth. DSB-SC Modulation & Demodulation 3. What is the maximum signal frequency which can be recovered with sampling frequency of 9KHz? In SSB Modulation Experiment, A Crystal Band Pass Filter Is Used. PLL as FM Demodulator 7. In this lab you will begin to look at the frequency power spectrum of signals. The theory of DSB-SC/SSB-SC modulation and demodulation Double sideband suppressed carrier modulation At the beginning of the explanation of amplitude modulation, we explained the AM radio system, but the term for amplitude in the theoretical expression was complex. endobj Modulation parameters can be adjusted in order to observe their effect on the modulated time signal and spectrum. 4. Experiment No. - LAB Manual SSB Modulation and Demodulation Experiment 7 SSB Modulation and Demodulation Objectives : By the end of this experiment, the student should be able to: 1. A fully working ASK scheme can be converted to PSK using CT3000. Laboratory Experiments Slide 18 Making an SSB Modulator Slide 19 An SSB Modulator (cont. In order to demodulate single sideband, SSB, it is necessary to reintroduce the carrier. 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