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Author: Cem Sen
Publisher:
ISBN: 9781423534044
Category :
Languages : en
Pages : 157
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Book Description
The purpose of this thesis is to model coherently detected BFSK, BPSK and QPSK, and noncoherently detected BFSK communications systems in the presence of additive white Gaussian Noise (AWGN) and different types of jamming signals by using MATLAB Communications Toolbox and Simulink. The theoretical results are available for the effect of AWGN on the performance of digital communication systems. To determine the performance of a system in the presence of AWGN and different types of jamming signals we need to use computer simulation. The results obtained by simulation are presented for bit-error rate (BER) as a function of signal-to-noise ratio (SNR) and signal-to-jamming ratio (SJR). As observed from the simulation results, different types of jamming affect each digital modulation technique differently.
Author: Cem Sen
Publisher:
ISBN: 9781423534044
Category :
Languages : en
Pages : 157
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Book Description
The purpose of this thesis is to model coherently detected BFSK, BPSK and QPSK, and noncoherently detected BFSK communications systems in the presence of additive white Gaussian Noise (AWGN) and different types of jamming signals by using MATLAB Communications Toolbox and Simulink. The theoretical results are available for the effect of AWGN on the performance of digital communication systems. To determine the performance of a system in the presence of AWGN and different types of jamming signals we need to use computer simulation. The results obtained by simulation are presented for bit-error rate (BER) as a function of signal-to-noise ratio (SNR) and signal-to-jamming ratio (SJR). As observed from the simulation results, different types of jamming affect each digital modulation technique differently.
Author: Richard Poisel
Publisher: Artech House
ISBN: 1608071669
Category : Technology & Engineering
Languages : en
Pages : 895
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Book Description
This edition features a wealth of new material on urban warfare, including a computer simulation of EW architecture alternatives for land-based forces based on urban constraints. It also includes an expanded section on time-hopped spread spectrum communications, more details on modern communication system technologies such as CDMA and OFDM, and an in-depth discussion on sources of urban noise. This practical resource is focused on showing the reader how to design and build jammers specifically targeted at spread spectrum, anti-jam communications. Moreover, it gives assistance in evaluating the expected performance of jamming systems against modern communications systems, and discover the best waveform to use to counter communication systems designed to be effective in jamming environments. While mathematical derivations in general are avoided, the book presents error rate performance equations for most modern digital anti-jam communication systems
Author: Josip Bilandzija
Publisher: GRIN Verlag
ISBN: 3668660891
Category : Computers
Languages : en
Pages : 18
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Book Description
Seminar paper from the year 2018 in the subject Computer Science - Commercial Information Technology, University of Applied Sciences Stuttgart, language: English, abstract: What is jamming? The theoretical principle behind it is the jamming of data transmission in general between a transmitter and a receiver. The practical principle defines however the exclusive jamming of the data receiver. At this point of transmission the signal is weakest and most open to attack. There are few ways to attack the data exchange between two wireless connected points. This paper gives an insight into communications jamming from the topic area of information security.
Author: Ray H. Pettit
Publisher:
ISBN:
Category : Computers
Languages : en
Pages : 200
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Digital communications systems that must operate successfully in the presence of signal propagation disturbances and radio frequency (RF) interference impose design requirements different from those for undisturbed channels. Without special attention, channel disturbances can degrade and possibly completely disrupt a communications link. Fortunately, the effects of RF propagation disturbances and interference, often referred to as signal fading and jamming, can be mitigated by careful design. This includes proper selection of modulation, coding, diversity, carrier tracking, synchronization, and signal acquisition techniques. The COMLNK computer simulation program was developed to facilitate the design of robust communications systems that must operate in adverse signal conditions. COMLNK provides a highly accurate numerical laboratory with which various design options can be quantitatively evaluated prior to commitment to hardware. The program is also useful in evaluation of existing systems, and it has proven to be invaluable in planning and conducting hardware tests. This document outlines the capabilities of the simulation and contains information useful in applying the code to the design, evaluation, and testing of digital communications systems.
Author: Francis C.M. Lau
Publisher: Springer Science & Business Media
ISBN: 9783540006022
Category : Computers
Languages : en
Pages : 244
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Book Description
One of the first books in this area, this text focuses on important aspects of the system operation, analysis and performance evaluation of selected chaos-based digital communications systems – a hot topic in communications and signal processing.
Author: Francis C.M. Lau
Publisher: Springer Science & Business Media
ISBN: 3662051834
Category : Technology & Engineering
Languages : en
Pages : 236
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Book Description
One of the first books in this area, this text focuses on important aspects of the system operation, analysis and performance evaluation of selected chaos-based digital communications systems – a hot topic in communications and signal processing.
Author: Scott R. Bullock
Publisher: IET
ISBN: 1891121723
Category : Technology & Engineering
Languages : en
Pages : 416
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Book Description
Now updated, this reference for digital communication provides an intuitive approach to transceiver design, allowing a broad spectrum of readers to understand concepts in wireless, data link, and digital communication techniques.
Author: Marvin Kenneth Simon
Publisher: Prentice Hall PTR
ISBN:
Category : Computers
Languages : en
Pages : 920
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Book Description
Written by internationally recognized leaders in the field, this volume presents complete, comprehensive and modern coverage of the theory and practice of signal design and detection in digital communications. Based on the authors' vast industrial experience, it explores the basics as well as the state-of-the-art developments in both modulation and detection.
Author: Sklar
Publisher: Pearson Education India
ISBN: 9788131720929
Category :
Languages : en
Pages : 1168
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Book Description
