EME communication EME communication‚ which stands for Earth-Moon-Earth communication‚ is known as moon bounce. The concept is to send radio signals from the earth to the moon‚ then by the surface of the moon reflected back to earth and then signal received. It means to use the moon as a passive reflector for accomplishing the two way communication between two locations on earth. As we know the distance between the Earth and the moon is very large‚ there will be huge path loss during the transmission
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304 IEEE COMMUNICATIONS LETTERS‚ VOL. 16‚ NO. 3‚ MARCH 2012 A Low Complexity MMSE for OFDM Systems over Frequency-Selective Fading Channels Tian-Ming Ma‚ Yu-Song Shi‚ and Ying-Guan Wang Abstract—Channel estimation is one of the key technologies in Orthogonal Frequency Division Multiplexing (OFDM) systems‚ which has received more and more consideration. A modified Minimum Mean Square Error (MMSE) is proposed and simulated by MATLAB over a frequency-selective fading channel. Comparing with
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Rajalakshmi Engineering College‚ Thandalam Prepared by Ms. S.Sheena Christabel‚ Lecturer/ECE EC2311-COMMUNICATION ENGINEERING III YEAR EEE A Introduction to Communication Engineering Communication Engineering Course Work introduces different methods of analog communication and their significance. Digital Communication methods for high bit rate transmission are explained. It involves the concepts of source and line coding techniques for enhancing rating of transmission of minimizing the errors
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Figure 2). % N0 2 ‚ • N0 is the average power/(unit BW) at the front-end of the & ’ receiver in AM and DSB-SC. $ N 2 0 −ω c 4π B ω 4π B c ω Figure 2: Bandlimited noise spectrum The filtered signal available for demodulation is given by: & % ’ x(t) = s(t) + n(t) n(t) = nI (t) cos ωc t −nQ (t) sin ωc t nI (t) cos ωc t is the in-phase component and nQ (t) sin ωc t is the quadrature component. n(t) is the representation for narrowband noise. There are different
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Please answer the following questions‚ you can upload your answers in a MS Word file‚ or Word file. Answer all the questions‚ and upload the answers back before Sunday March 31‚ 2013 (before 11: 55 pm): 1.Differentiate between guided media and unguided media 2.What are three important characteristics of a periodic signal 3.Define funamental frequency 4.What is attenuation? 5.Describe the components of optical fiber cable. 6.Indicate some significant differences between broadcast radio and
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ANNA UNIVERSITY‚ CHENNAI AFFILIATED INSTITUTIONS R 2008 B.E. ELECTRONICS AND COMMUNICATION ENGINEERING II - VIII SEMESTERS CURRICULA AND SYLLABI SEMESTER II SL. No. COURSE CODE COURSE TITLE L T P C THEORY 1. 2. 3. 4. 5. a 5. b 5. c HS2161 MA2161 PH2161 CY2161 ME2151 EE2151 EC2151 Technical English – II* Mathematics – II* Engineering Physics – II* Engineering Chemistry – II* Engineering Mechanics (For non-circuit branches) Circuit Theory (For branches under Electrical Faculty) Electric Circuits
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Baldeo Persaud NT1310 Unit 9 Exercise 1 Light Source and Components-Definitions 1. Forward Biased LED: A bias voltage that is applied to a pn-junction in the direction that causes a large current flow; used in some semiconductor diode circuits. 2. Incoherent Light: Light in which the electric and magnetic fields of photons are completely random in orientation. Incoherent light is typically emitted from light bulbs and LEDs. 3. Laser: Acronym for light amplification by stimulated emission of radiation
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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
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Third Year Engineering (Semester V & VI) (Revised) Course for Academic Year 2009-10‚ Electronics and Telecommunication Engineering‚ TE‚ Semester VI No. of Periods per week (60 minutes each) Sr. No Theoy Termwork 2. 3. 4. 5. 6. Subjects Lect ure Practical Microprocessors & MicrocontrollersII Antenna & Wave Propagation Industrial Economic & Telecom regulation Digital Communication TV & Video Elective 4 2 - 3 100 4 2 - 3 2
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