Modulation Essays & Research Papers

Best Modulation Essays

  • Pulse Modulation - 2400 Words
    DIGITAL TRANSMISSION Definition: Transmittal of digital signals between two or more points in a communications system. Advantages of Digital Transmission • Noise immunity • Ease of processing and combining • Ease of measuring and evaluating • Disadvantages of Digital Transmission • Requires more bandwidth • Necessitates encoding and decoding circuitry • Requires precise time synchronization • Incompatible with older analog transmission systems Pulse Modulation Pulse...
    2,400 Words | 10 Pages
  • Phase Modulation - 1491 Words
    Maxim > App Notes > Basestations/wireless infrastructure Wireless and RF Keywords: tutorial, QPSK, modulation, modulator, demodulator, demodulation May 01, 2002 APPLICATION NOTE 686 QPSK modulation demystified Abstract: Readers are presented with step-by-step derivations showing the operation of QPSK modulation and demodulation. The transition from analog communication to digital has advanced the use of QPSK. Euler's relation is used to assist analysis of multiplication of sine...
    1,491 Words | 5 Pages
  • Hierarchical Modulation - 304 Words
    Hierarchal Modulation 1. Theory Wireless transmission of image and video data in hostile mobile environments necessitates for a system which guarantees the quality of the data using effective error protection while at the same time ensures continues video streaming [1]. Unequal Error Protection is a technique which makes use of the fact that not all data in a video stream is equally important [1]. Based on the study first presented in [2], data can be divided into different categories based...
    304 Words | 1 Page
  • Amplitude Modulation - 1171 Words
    Amplitude Modulation A carrier is used to make the wavelength smaller for practical transmission and to permit multiplexing. The spectrum is used to measure bandwidth (the range of frequencies) and the efficiency (the power in the side-bands compared to the total power) Bandwidth can be predicted using BW = 2 fm where fm = the maximum modulating frequency Efficiency depends only on the modulating index, m (the fraction of the carrier you modulate by) AM is limited to 33% efficiency because the...
    1,171 Words | 5 Pages
  • All Modulation Essays

  • Analog Modulation - 1682 Words
    Amplitude Modulation and Angle Modulation Abstract— The aim of this document is to improve understanding of amplitude modulation and angle modulation. We have done this by using Lab view. We have shown 4 types of Amplitude Modulation & 2 types of Angle Modulation. Keywords-amplitude modulation (AM), angle modulation, double side band modulation (DSB), double sideband suppressed carrier modulation (DSB-SC), double sideband full carrier modulation (DSB-FC), single side band...
    1,682 Words | 9 Pages
  • Frequency Modulation - 10694 Words
    Chapter 9 MODULATION AND DEMODULATION D ata modulators, especially those intended to produce constantenvelope output signals, are “high-leverage” components in that even very small deviations from ideal in their behavior can lead to large degradations in overall system performance. Therefore, successful simulation of wireless communication systems depends upon the use of modulator models that capture all of the significant deviations from ideal behavior. In the “usual” development of...
    10,694 Words | 102 Pages
  • Ptm Modulation - 657 Words
    Pulse-Time Modulation In pulse-modulated systems, as in an analog system, the intelligence may be impressed on the carrier by varying any of its characteristics. In the preceding paragraphs the method of modulating a pulse train by varying its amplitude was discussed. Time characteristics of pulses may also be modulated with intelligence information. Two time characteristics may be affected: (1) the time duration of the pulses, referred to as PULSE-DURATION MODULATION (pdm) or PULSE-WIDTH...
    657 Words | 2 Pages
  • Modulation Techniques - 5335 Words
    Introduction to Analog And Digital Communications Second Edition Simon Haykin, Michael Moher Chapter 7 Digital Band-Pass Modulation Techniques 7.1 Some Preliminaries 7.2 Binary Amplitude-Shift Keying 7.3 Phase-Shift Keying 7.4 Frequency-Shift Keying 7.5 Summary of Three Binary Signaling Schemes 7.6 Noncoherent Digital Modulation Schemes 7.7 M-ary Digital Modulation Schemes 7.8 Mapping of Digital Modulation Waveforms onto Constellations of Signal Points 7.9 Theme Examples 7.10 Summary...
    5,335 Words | 38 Pages
  • Digital Modulation - 4226 Words
    Digital modulation differents kind and aplications form them. Digital Modulation Techniques The techniques used to modulate digital information so that it can be transmitted via microwave, satellite or down a cable pair are different to that of analogue transmission. The data transmitted via satellite or microwave is transmitted as an analogue signal. The techniques used to transmit analogue signals are used to transmit digital...
    4,226 Words | 13 Pages
  • FM modulation - 378 Words
    Prelab 3 1: The operations involved in the modulation of DSB-SC are: A message signal and carrier signal are fed in to a mixer which effectively modulates the message signal. The figure below demonstrates this step: Mathematically, this is expressed as the following: The resultant waveform can be demodulated by multiplying the modulated signal by the carrier signal of the same frequency and then using the low pass filter to filter out the remaining frequencies to get the frequency...
    378 Words | 2 Pages
  • frequency modulation - 324 Words
    INDEX S.No TITLE PAGE.NO 1. ABSTRACT 2 2. CIRCUIT DIAGRAM 3 3. DESCRIPTION 5 4. THERMISTOR 9 5. IC5555 TIMER 13 6. TRANSISTOR 24 7. LED 27 8. CONCLUSION 37 ABSTRACT: The objective of our project is to design the frequency modulator and demodulator with the help of IC566 and IC565 and thus obtain the modulation of the carrier wave with respect to frequency of message signal. Frequency modulation is defined as the process of changing the frequency of the...
    324 Words | 3 Pages
  • Generation of Amplitude Modulation (LAB)
    1. TITLE OF EXPERIMENT Generation of amplitude modulation (AM) signal. 2. OBJECTIVE 2.1. To understand the concept of linear modulation techniques in term of time and frequency domain representations. 2.2. To examine the main parameters of amplitude modulated signal. 2.3. To introduce the application of frequency shift property of Fourier Transform in amplitude modulated signal. 2.4. To understand the amplitude modulation characteristics. 2.5. To investigate the modulation index. 3....
    1,919 Words | 8 Pages
  • Types of Modulation: Advantages and Disadvantages
    In analog technology, compare and contrast the advantages and disadvantages of amplitude modulation, frequency modulation, phase modulation, and Quadrature Amplitude Modulation (QAM). Refrences: Electronics and Radio Today. (n.d.). Retrieved from http://www.electronics-radio.com/articles/radio/modulation/amplitude_modulation/am.php Electronics and Radio Today. (n.d.1). Retrieved from http://www.electronics-radio.com/articles/radio/modulation/frequency_modulation/fm.php M.S. Richer....
    985 Words | 3 Pages
  • Amplitude Modulation and Demodulation - 591 Words
    AMPLITUDE MODULATION AND DEMODULATION : OBJECTIVE : Study how to perform the amplitude modulation and demodulation and to calculate the modulation index for various modulating voltages. Theory : AMPLITUDE MODULATION : Modulation is defined as the process by which some characteristics of a carrier signal is varied in accordance with a modulating signal. The base band signal is referred to as the modulating signal and the output of the modulation process is called as the modulation signal....
    591 Words | 3 Pages
  • Pulse Modulation Techniques - 3003 Words
    PULSE MODULATION TECHNIQUES INTRODUCTION • Modulation is the process of frequency translation in which any one parameter(Amplitude, frequency or phase) of high frequency carrier signal is varied in accordance with instantaneous value of low frequency modulating signal. • Modulation is either analog or digital. INTRODUCTION • Many signals in modern communication systems are digital • Additionally, analog signals are transmitted digitally • Digitizing a signal results in reduced...
    3,003 Words | 14 Pages
  • Abcs of Modulation Domain Analysis
    Application Note: CNT-91 + TimeView™ ABCs of Modulation Domain Analysis Background An instrument like an Oscilloscope lets you view voltage variations over time. A Spectrum Analyzer lets you view voltage variations over frequency. A Modulation Domain Analyzer (MDA) lets you view frequency variations over time. Figure 1 shows all three dimensions pictorially. To analyze all dynamic properties of a signal, all three of these tools are required: Oscilloscope (v vs. t) Spectrum Analyzer (v vs....
    2,309 Words | 8 Pages
  • Comparative of Digital Modulation Techniques
    ISSN: 2277-3754 ISO 9001:2008 Certified International Journal of Engineering and Innovative Technology (IJEIT) Volume 2, Issue 2, August 2012 Comparative Study of Digital Modulation Techniques in WIMAX Umesh Sharma Abstract: - The migration to 4G networks will bring a new level of expectation to wireless communications. As after digital wireless revolution made mobile phones available for everyone, the higher speeds and packet delivery of 4G networks will make high quality multimedia...
    2,281 Words | 8 Pages
  • Different ways of Modulation Techniques
    Modulation Techniques Modulation Techniques Modulation is the process in which a signal is entered into and transmitted by a signal carrier. There are several ways signals can be modulated and differ based on the equipment and technique utilized. Three common ways that signals are transmitted include a 56K modem, an asymmetrical digital subscriber line (ADSL), and Wireless Fidelity (Wi-Fi). Each of these methods are effective means of transmitting a digital signal, however, the 56K modem is...
    523 Words | 2 Pages
  • Amplitude Modulation - Paper - 4568 Words
    ANALOG COMMUNICATION LAB Amplitude Modulation Date: 4th February 2013 Submitted By ADARSH V R AKHIL KRISHNA R ANANTHU R KRISHNAN ARUN KOSHY T B100291EC B100125EC B100256EC B100091EC S6 ECE Batch: A Contents 1 Introduction 2 Theory 3 Principles and Circuits Used 4 Design 5 Observations and Results 6 Conclusion 3 5 8 15 21 23 2 Chapter 1 Introduction Today,communication has entered into our daily lives in so many different ways that it is very easy to overlook the multitude...
    4,568 Words | 15 Pages
  • Space Vector Modulation - 7222 Words
    IECON'01: The 27th Annual Conference of the IEEE Industrial Electronics Society SPACE VECTOR MODULATION –An Introduction == Tutorial at IECON2001== Dorin O. Neacsu Correspondence Address: Satcon Corporation, 161 First Street, Cambridge, MA 02142, Email neacsu@earthlink.net I. INTRODUCTION Space Vector Modulation became a standard for the switching power converters and important research effort has been dedicated to this topic. Tens of papers, research reports and patents were developed in...
    7,222 Words | 30 Pages
  • Digital Modulation in Data Communicaion
    The Universal Seven-Part Circuit of Data Communications System Seven-Part Circuit of Data Communications System - A universally accepted standard designed to send data from a source to a remote destination. The Universal Seven-Part Circuit of Data Communications System 1. The Data Terminal Equipment (DTE) at point A. 2. The interface between the DTE and the Data Circuit-Terminating Equipment (DCE or often called Data Communications Equipment) at point A. 3. The DCE at point A. 4. The...
    1,275 Words | 4 Pages
  • Modulation Techniques of Analog Signals
    Kirk Samuda Institute of Advanced Technology Devry University September 2005 Advanced Telecommunication To fully understand the advantages of the various modulation techniques of analog signals, I think it’s important to understand the very basic premise on which modulation exist. Allow me the privilege of starting with the basic function of any communication system, which is transmitting information from one point to another. It may...
    954 Words | 4 Pages
  • Amplitude Modulation and Hz - 1126 Words
    1. A 1.4M Hz carrier is modulated by a music signal that has a frequency components from 20 Hz to 10k Hz. Determine the range of frequencies generated for the upper and lower sidebands. Solution: Upper Side Band = 1, 400, 000 Hz + 20 Hz = 1,400, 020 Hz Up to = 1, 400, 000 Hz + 10, 000 Hz = 1, 410, 000 Hz Lower Side Band = 1, 400, 000 Hz – 10, 000 Hz = 1, 390, 000 Hz Up to = 1, 400, 000 Hz – 20 Hz = 1, 399, 980 Hz 2....
    1,126 Words | 5 Pages
  • Frequency Modulation and Circuit Diagram
    Seat No.: ________ Enrolment No.___________ GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–V • EXAMINATION – SUMMER 2013 Subject Code: 151004 Subject Name: Electronic Communication Time: 10.30 am - 01.00 pm Date: 20-05-2013 Total Marks: 70 Instructions: 1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. Q.1 (a) Derive Friiss formula for noise factor of cascaded amplifier. 07 (b) Prove that ESD...
    409 Words | 4 Pages
  • Fsk Modulation and Demodulation - 2425 Words
    FSK MODULATION AND DEMODULATION PROGRAM USING MATLAB LIST OF TABLES: CHAPTER 1: INTRODUCTION. 1.1-INTRODUCTION TO WIRELESS MODEM. 1.2-INTRODUCTION TO FREQUENCY SHIFT KEYING 1.2.1-FSK MODULATOR 1.2.2-FSK DEMODULATION CHAPTER 2: COMPONENT DESCRIPTION. 2.1-LIST OF COMPONENTS 2.2-DESCRIPTION OF FUNCTIONAL DIAGRAM 2.2.1 IC 555. 2.2.2 565 PLL. CHAPTER 3: CIRCUIT DIAGRAM AND WORKING. 3.1-CIRCUIT DIAGRAM OF FSK MODULATOR USING IC555. 3.2-CIRCUIT DIAGRAM OF FSK DEMODULATOR...
    2,425 Words | 10 Pages
  • Fm & Pm Modulation - 255 Words
    Introduction Angle modulation consist of : * FM (Frequency Modulation) * PM (Phase Modulation) FM (Frequency Modulation) The need for modulation arises because the range of frequencies contained in a baseband signal is not, in general, the same as the range of frequencies which can be transmitted by the communications channel. * AM – Amplitude Modulation Medium wave (300 kHz to 3 Mhz) , short wave (3-30 Mhz) * FM – Frequency Modulation VHF (30-300 MHz) FM is the process of...
    255 Words | 1 Page
  • Modulation and Quadrature Phase Shift
    Aim : To design an optical data communication network which uses Offset Quadrature Phase Shift Keying modulation technique. oftSware used : Optisystem Components used: 1) Psuedo Random Bit Sequence Generator 2) RZ Pulse Generator 3) Fork 1x2 4) Oscilloscope Visualiser 5) RF Spectrum Analyser 6) OQPSK Modulator 7) Quadrature De-modulator 8) M-ary Threshold Detector 9) Eye Diagram Analyzer 10) PSK Sequence...
    948 Words | 6 Pages
  • Quadrature Amplitude Modulation - 2441 Words
    Quadrature amplitude modulation (QAM) ([pic] /ˈkwɑːm/ or /ˈkæm/ or simply "Q-A-M") is both an analog and a digital modulation scheme. It conveys two analog message signals, or two digital bit streams, by changing (modulating) the amplitudes of two carrier waves, using the amplitude-shift keying (ASK) digital modulation scheme or amplitude modulation (AM) analog modulation scheme. The two carrier waves, usually sinusoids, are out of phase with each other by 90° and are thus...
    2,441 Words | 11 Pages
  • fsk modulation demodulation - 567 Words
    1.1 ABSTRACT: 2 .1 BLOCK DIAGRAM: Fig 2.1 Block diagram for FSK modulation and de-modulation 2.2.1 PIN DIAGRAM- IC 565 : Fig 2.2 Pin diagram for IC 565 2.2.2 PIN DIAGRAM -IC 555: Fig 2.3 Pin diagram for IC 555 3.1 DESIGN CALCULATION: 3.1.1 FSK MODULATOR: ON time TH=0.693RBC OFF time TL=0.693(RA+RB)C Total time T=TH+TL=0.693(RA+2RB)C 1 f1= -------------------------- → (1)...
    567 Words | 5 Pages
  • Digital Modulation Techniques - 2154 Words
    LOVELY PROFESSIONAL UNIVERSITY TERM PAPER Topic: Digital Modulation Techniques Course code: ELE102 Course title: Electrical science-II Submitted to: Submitted by: Subrahmanyam Tanala Sir vishwajeet kumar Sec:K1901 Roll:B57 Contents INTRODUCTION • 1 Aim • 2 Analog modulation methods • 3 Digital modulation methods o 3.1 Fundamental...
    2,154 Words | 9 Pages
  • frequency modulation direct method
    Frequency Modulation Xavier University – Ateneo de Cagayan Submitted by: Submitted to: Dapal, Jamie Daisylette Engr. Mary Jean Apor Fermano, Jerick James Oraiz, Gerard James Sabunod, Shane John Siman, Lester C. Objectives: 1. To obtain a frequency modulated signal via direct method 2. To understand the process of frequency modulation by direct method Background Theory: Frequency modulation uses the information signal, Vm(t) to...
    414 Words | 2 Pages
  • Multi-Level Digital Modulation & Demodulation
    CS3282 Digital Comms 9.1 2 May’06 / BMGC Multi-level digital modulation & demodulation. 9.1. Introduction: So far, in looking at carrier modulated data transmission, we have concentrated mainly on binary signalling using simple forms of ASK, FSK and PSK. With a suitable pulse-shape, binary signalling can achieve a bandwidth efficiency of up to 2 bits/second per Hz using real unipolar pulses (base-band equivalent of ASK) or real bipolar pulses (base-band equivalent of PSK) at base-band....
    948 Words | 3 Pages
  • Factors Affecting the Passing Rate of Ece Board Examinees
    CHAPTER II THEORETICAL FRAMEWORK This Chapter presents the Relevant Theories, Related Literature and Studies, Conceptual Framework, Hypothesis and the Definition of Terms used in the study. Relevant Theories There are two theories which are considered relevant in this study, namely: Goal Setting Theory of Motiviation by Dr. Edwin Locke (1990), and Cognitive Learning Theory. Goal Setting Theory states that goal setting is essentially linked to task performance. It states that...
    2,806 Words | 9 Pages
  • Visible Light Communication Systems with low complexity
    MIMO-OFDM VISIBLE LIGHT COMMUNICATION SYSTEM WITH LOW COMPLEXITY SUBJECT: MODERN SATELLITE COMMUNICATION SUBJECT CODE: EEE 637 SUBMITTED BY, M.TECH COMMUNICATION ENGINEERING (2nd SEMESTER) SCHOOL OF ELECTRONICS ENGINEERING (SENSE) VELLORE INSTITUTE OF TECHNOLOGY VELLORE, TAMIL NADU - 632014 ABSTRACT Visible Light Communication (VLC) systems are being developed with the ultimate aim to create ultra-high-speed, high security, biologically friendly communications networks...
    6,672 Words | 37 Pages
  • line coding techniques in DCS
    EE4512 Analog and Digital Communications Chapter 7 Multiplexing Techniques Chapter 7 EE4512 Analog and Digital Communications Chapter 7 Multiplexing Techniques • Time Division Multiplexing • Pages 364-368 Chapter 7 EE4512 Analog and Digital Communications Chapter 7 • Time division multiplexing (TDM) combines several low, fixed and predefined bit rate sources into a single high speed bit stream for transmission over a single digital communication channel: Time...
    641 Words | 6 Pages
  • Data Transmission Methods - 8562 Words
    Data transmission methods Transmission Transmission is the act of transporting information from one location to another via a signal. The signal may be analog or digital, and may travel in different media. Transmission: Communication of data by propagation and processing of signals. Signal processing is the representation, transformation and manipulation of signals plus the information they contain. Signal Types Signals: An electric or electromagnetic representations of data by which data...
    8,562 Words | 27 Pages
  • Analog to Digital Comparison - 1389 Words
    Analog to Digital When the conversion takes place between analog and digital it becomes the base of all communication technologies. Just about all hardware uses digital so it is very important to convert analog signals into digital to perform support for hardware applications. All hardware devices are aimed to be digital. Therefore, devices in the future will not need conversion because they will already be digital. There are many examples of analog to digital like a scan picture. The analog...
    1,389 Words | 4 Pages
  • Sybulls - 2407 Words
    Course Design Guide NTC/362 Version 1 1 Syllabus College of Information Systems & Technology NTC/362 Version 1 Fundamentals of Networking Copyright © 2011 by University of Phoenix. All rights reserved. Course Description This course provides a foundation in the basic telecommunications and networking technologies fundamental to the industry and to the broad field of telecommunications. Analog, digital, and radio frequency technologies are covered. Also covered in this course is an...
    2,407 Words | 12 Pages
  • OFDM Channel Estimation - 30099 Words
    2ND QUARTER 2007, VOLUME 9, NO. 2 www.comsoc.org/pubs/surveys CHANNEL ESTIMATION FOR WIRELESS OFDM SYSTEMS MEHMET KEMAL OZDEMIR, LOGUS BROADBAND WIRELESS SOLUTIONS, INC. AND HUSEYIN ARSLAN, UNIVERSITY OF SOUTH FLORIDA ABSTRACT Orthogonal frequency division multiplexing (OFDM) is a special case of multi-carrier transmission and it can accommodate high data rate requirement of multimedia based wireless systems. Since channel estimation is an integral part of OFDM systems, it is...
    30,099 Words | 143 Pages
  • Ici Cancellation in Ofdm System
    AN EFFICIENT ICI CANCELLATION TECHNIQUE FOR OFDM COMMUNICATION SYSTEMS A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Master of Technology In Electronics System and Communication By BRAHMAJI T.A.R.K. Department of Electrical Engineering National Institute of Technology Rourkela 2009 AN EFFICIENT ICI CANCELLATION TECHNIQUE FOR OFDM COMMUNICATION SYSTEMS A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Master of...
    17,926 Words | 78 Pages
  • Atta - 47393 Words
    Analog Communication Theory: A Text for EE501 Michael P. Fitz The Ohio State University fitz.7@osu.edu Fall 2001 2 Note to Students. This text is an evolving entity. Please help make an OSU education more valuable by providing me feedback on this work. Small things like catching typos or big things like highlighting sections that are not clear are both important. My goal in teaching communications (and in authoring this text) is to provide students with 1. the required theory, 2. an...
    47,393 Words | 254 Pages
  • Learning Team Analog And Digital Comparison Paper
     Modulation is a technique in which a signal is imbedded in another signal which is known as the carrier signal. Modulation makes it possible to increase the quality of the signal, use smaller antenna, and have more flexibility for bandwidth adjustments. Modulation type is dependent on whether it is angular or amplitude. Angular modulation or sinusoidal angular modulation “is the variation in the angle of a sine-wave carrier “ (angle modulation, 2015)phase modulation and frequency...
    527 Words | 2 Pages
  • Mwehehe - 2300 Words
    Generating Amplitude-Modulated Signal (Matlab Code, Simulink and Multisim) E.M.Q. Panambo E.D.G de Guzman J.M.F. Heramis College of Engineering – Electronics Engineering Lyceum of Subic Bay, SBFZ e.panambo@yahoo.com Abstract – The receivers used to list Amplitude Modulation – Double Sideband Carrier (AM-DSBC) as the simplest receivers of any radio modulation technique; which may be why that version of amplitude modulation is still widely used today [1]. Amplitude modulation...
    2,300 Words | 9 Pages
  • Ofdm - 3513 Words
    Channel Tracking in Wireless OFDM Systems Heiko Schmidt, Volker K¨ hn, and Karl-Dirk Kammeyer u University of Bremen, FB-1, P.O. Box 33 04 40, D-28334 Bremen, Germany, e-mail: schmidt@comm.uni-bremen.de and Reinhard R¨ ckriem and Stefan Fechtel u Infineon Technologies AG, P.O. Box 80 09 49, D-81609 Munich, Germany e-mail: reinhard.rueckriem@infineon.com Abstract— In the presented paper, the principle of frequency domain channel estimation for wireless OFDM systems will be shown. A well known...
    3,513 Words | 26 Pages
  • PCM Based Matched Filter
     Chapter 1 Introduction 1.1 Digital Data Transmission Data transmission, digital transmission, or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. While analog transmission is the transfer of a continuously varying analog signal, digital communications is the transfer of discrete messages. The messages are either represented by a sequence of pulses by...
    2,425 Words | 9 Pages
  • Information Security, Kirk Samuda
    Analog and Digital Comparison Paper Kirk Samuda University of Phenix NTC/362 SEPTEMBER 30, 2013 There are so many new devices that allow the analog to digital, and digital to analog communication. These devices are needed to make the signal proper and allow for no noise on the line. This is what we call signal to noise ratio. Some of the hardware needed is some basic things, a modem is needed at a home or business, this turns analog to digital and vice versa. There is also components...
    1,455 Words | 5 Pages
  • Cellonics - 3904 Words
    |Electronics(ECE)/Electrical(EEE)/Instrumentation(EI or AE&I) Seminar Report | CELLONICS | CELLONICS ABSTRACT CHAPTER-1 INTRODUCTION 1INTRODUCTION Are you tired of slow modem connections?...
    3,904 Words | 16 Pages
  • Digital Communications Notes - 8984 Words
    Chapter-1: Introduction The purpose of a Communication System is to transport an information bearing signal from a source to a user destination via a communication channel. MODEL OF A COMMUNICATION SYSTEM(ANALOG) Information Source and Input Transducer I/P Signal TRANSMITTER CHANNEL Destination and Output Transducer O/P Signal RECEIVER Fig. 1.1: Block diagram of Communication System. The three basic elements of every communication systems are Transmitter, Receiver and Channel. The...
    8,984 Words | 34 Pages
  • 4G MOBILE COMMUNICATION - 270 Words
    SDC-06 Multi Carrier DS-CDMA System Objective: To implement the Multi carrier DS CDMA System using TMS320CV6713. Project Description: The input data is taken from different users .The PN sequences used for encoding the data for security purpose. Each user having different PN sequences. The User data is scrambled with PN sequences and given as input for Modulator. The 16-PSK (M-ary PSK) Modulation technique is implemented in Modulator. In 16-PSK Modulation, only 16 sub carriers are enough...
    270 Words | 2 Pages
  • Tut of Electronics - 587 Words
    Tutorial Sheet # 2 1. Sketch the time variation and frequency spectrum of an RF signal with 75 % Amplitude Modulation. Show several cycles of the modulated wave. Make the modulation frequency 1/10 of the carrier frequency. The unmodulated carrier has peak amplitude of 1.0V. In an amplitude modulation system, the message signal is given by Fig. and the carrier frequency is 1 KHz. The modulator output is SAM (t) = 2(b + 0.5m (t)) cos ωc t. 2. a. Determine the average message power. b. If b =...
    587 Words | 2 Pages
  • Enterprise Networking - 17402 Words
    International Advanced Diploma in Computer Studies Lecturer Guide Enterprise Networking © NCC Education Limited, 2007 V3.0 1 Enterprise Networking Lecturer Guide Modification History Revision Date Revision Description V1.0 28 November 2001 March 2003 August 2004 September 2007 For issue V1.1 V2.0 V2.1 Amendments to V1.0 Content update Minor amendments and update to Sessions 6, 9, 10, 11. Sample timetable included. © NCC Education Limited,...
    17,402 Words | 224 Pages
  • Investigation of the effect of different channel estimation techniques on FBMC-IOTA systems
    Ugochukwu, Obum E, MSc.dissertation Investigation of the effect of different channel estimation techniques on FBMC-IOTA systems OBUM UGOCHUKWU Master of Science in Mobile Communications systems from the University of Surrey Department of Electronic Engineering Faculty of Engineering and Physical Sciences University of Surrey Guildford, Surrey, GU2 7XH, UK Supervised by: Dr. Mehrdad Dianati Dr. Razieh Razavi September 2014 i Ugochukwu, Obum E, MSc.dissertation Abstract Filter bank...
    16,489 Words | 130 Pages
  • Analog and Digital Comparison - 1568 Words
    Analog and Digital Comparison NTC/362 February 3, 2014 Dr. Phillip Coleman Running head: ANALOG AND DIGITAL COMPARISON 1 ANALOG AND DIGITAL COMPARISON 6 Analog and Digital Comparison Telecommunications is a term used to describe any type of long distance communication techniques. In the digital age, telecommunications describes the use of electronic devices that facilitate communications between people, computers, and other machines. There are several technologies used today that...
    1,568 Words | 7 Pages
  • Questions and Answers on Communication Technology
    1. Explain what is meant by the term wireless. Wireless is a term used to describe telecommunications in which electromagnetic waves (rather than some form of wire) carry the signal over part or all of the communication path. 2. What is a frequency-shift-keying system? Describe two methods of generating FSK. Frequency-shift keying (FSK) is a method of transmitting digital signals. 6. Explain a method used to generate BPSK using Figure 10-5 as a basis. Need for modulation 1) to reduce the...
    837 Words | 3 Pages
  • Sample Course File - 840 Words
     Instructor Name: Prof. Dr. “NAME” (Employee Code) Course Name: Communication Systems Course Offered: Spring 2015 Course Code: EE-385 Department of Electrical Engineering Faculty of Engineering & Technolgy, Hafiz Hayat Campus University of Gujrat, Gujrat University of Gujrat Course File Contents Faculty of Engineering & Technology Subject: Communication Systems Course Code: EE-385 Course Tutor: Prof. Dr. “NAME” Time Table…………………………………..…………………………………...
    840 Words | 7 Pages
  • Kirk Patrick, Kirk Samuda, Analog & Digital Signals
     Kirk Samuda University of Phoenix NTC/362 Week (2) Understanding the nature of digital signals, binary, and other multi-level signal types do require an explanation of the two most prominent telecommunications types that exist, and examples of how they are applicable to specific devices, the binary is association and its function. (Please note that the majority of the information below are extracts from various websites, used to...
    925 Words | 4 Pages
  • Research paper - 824 Words
    OFDM 1.Abstract Orthogonal Frequency Division Multiplexing (OFDM) is one of recently wide used technology in wire and wireless system .Now -a- days OFDM is also been used in the optical communications as well as in digital communications system and also has been adopted as the wireless LAN standard. This technology is used to overcome intersymbol interference which is caused by the dispersive channel. OFDM can be adopted in various ways to achieve a very good performance of the system....
    824 Words | 3 Pages
  • Multi-Band Carrier Code Division Multiple Access for 4g Mobile System with Improved Signal Quality
    World Applied Sciences Journal 12 (3): 330-335, 2011 ISSN 1818-4952 © IDOSI Publications, 2011 Multi-band Carrier Code Division Multiple Access for 4G Mobile System with Improved Signal Quality Jalal J. Hamad Ameen and Widad Binti Ismail School of Electrical and Electronics, Universiti Sains Malaysia, Pulau Penang, 11800, Malaysia Abstract: The proposed frequency band for a 4G mobile system is 2 to 8 GHz, while the proposed access for the system is MC-CDMA / OFDM. In this paper, a new...
    2,345 Words | 8 Pages
  • Microwave - 4433 Words
    Acropolis Technical Campus, Indore Department of Electronics and Communication Engineering Subject-Microwave lab Student Name: Enrollment No.: Sub. Code- EC 704 Experiment No.: 01 Date: Batch: Details of submissions & performance Performing Extra turn Regular turn First Submission Second submission Grade and Remarks by the Tutor 1. Clarity about the objective of the experiment 2. Clarity about the problem statement 3. Submitted the work in desired format 4. Shown capability to solve...
    4,433 Words | 17 Pages
  • EC6512 COMMUNICATION SYSTEMS LABORATORY
    EC6512 COMMUNICATION SYSTEMS LABORATORY OBJECTIVES: The student should be made to:  To visualize the effects of sampling and TDM  To Implement AM & FM modulation and demodulation  To implement PCM & DM  To implement FSK, PSK and DPSK schemes  To implement Equalization algorithms  To implement Error control coding schemes LIST OF EXPERIMENTS: 1. Signal Sampling and reconstruction 2. Time Division Multiplexing 3. AM Modulator and Demodulator 4. FM Modulator and Demodulator 5....
    214 Words | 2 Pages
  • Analog Noise - 813 Words
    ' $ Noise Analysis - AM, FM The following assumptions are made: • Channel model – distortionless – Additive White Gaussian Noise (AWGN) • Receiver Model (see Figure 1) – ideal bandpass filter – ideal demodulator & % ' Modulated signal s(t) x(t) $ Demodulator Σ BPF w(t) Figure 1: The Receiver Model • BPF (Bandpass filter) - bandwidth is equal to the message bandwidth B • midband frequency is ωc . Power Spectral Density of Noise • and is defined for both...
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  • Major Project Sample Report
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