Author: William Walden Mumford
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 104
Book Description
Noise Performance Factors in Communication Systems
Author: William Walden Mumford
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 104
Book Description
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 104
Book Description
Noise Performance Factors in Communication Systems
Author: W. W. Mumford
Publisher:
ISBN: 9780890060001
Category :
Languages : en
Pages : 98
Book Description
Publisher:
ISBN: 9780890060001
Category :
Languages : en
Pages : 98
Book Description
Noise performance factors in communication systems
Noise Performance Factors in Communication Systems [by] W.W. Mumford [and] Elmer H. Scheibe
Author: William Walden Mumford
Publisher:
ISBN:
Category : Electronic noise
Languages : en
Pages : 89
Book Description
Publisher:
ISBN:
Category : Electronic noise
Languages : en
Pages : 89
Book Description
Communication Systems - I
Author: Dr. J. S. Chitode
Publisher: Technical Publications
ISBN: 9333223991
Category : Technology & Engineering
Languages : en
Pages : 770
Book Description
Analysis tools such as Fourier series, Fourier transforms signals, systems and spectral densities are discussed in the second chapter. Introduction is presented in the first chapter. Third chapter presents additional analysis techniques such as probability, random variables, distribution functions and density functions. Probability models and random processes are also discussed. Noise representation, sources, noise factor, noise temperature, filtering of noise, noise bandwidth and performance of AM/FM in presence of noise is discussed in fourth chapter. Analog pulse modulation is presented in fifth chapter. Sampling, PAM, PAM/TDM are discussed in this chapter. Sixth chapter deals with digital pulse modulation methods such as PCM, DM, ADM and DPCM. Seventh chapter presents digital multiplexers, line coding, synchronization, scramblers, ISI, eye patterns and equalization techniques. Digital modulation is presented in eighth chapter. Phase shift keying, frequency shift keying, QPSK, QAM and MSK are presented. Last chapter deals with error performance of these techniques using matched filter.
Publisher: Technical Publications
ISBN: 9333223991
Category : Technology & Engineering
Languages : en
Pages : 770
Book Description
Analysis tools such as Fourier series, Fourier transforms signals, systems and spectral densities are discussed in the second chapter. Introduction is presented in the first chapter. Third chapter presents additional analysis techniques such as probability, random variables, distribution functions and density functions. Probability models and random processes are also discussed. Noise representation, sources, noise factor, noise temperature, filtering of noise, noise bandwidth and performance of AM/FM in presence of noise is discussed in fourth chapter. Analog pulse modulation is presented in fifth chapter. Sampling, PAM, PAM/TDM are discussed in this chapter. Sixth chapter deals with digital pulse modulation methods such as PCM, DM, ADM and DPCM. Seventh chapter presents digital multiplexers, line coding, synchronization, scramblers, ISI, eye patterns and equalization techniques. Digital modulation is presented in eighth chapter. Phase shift keying, frequency shift keying, QPSK, QAM and MSK are presented. Last chapter deals with error performance of these techniques using matched filter.
Design of Low-Noise Amplifiers for Ultra-Wideband Communications
Author: Roberto Díaz Ortega
Publisher: McGraw Hill Professional
ISBN: 0071824448
Category : Technology & Engineering
Languages : en
Pages : 129
Book Description
Cutting-edge techniques for ultra-wideband, low-noise amplifier design This pioneering resource presents alternatives for implementing power- and area-efficient integrated low-noise amplifiers for ultra-wideband communications. Design methodologies for distributed amplifiers, feedback amplifiers, inductor structures with reduced area, and inductorless techniques are discussed. Cowritten by international experts in industry and academia, this book addresses the state of the art in integrated circuit design in the context of emerging systems. Design of Low-Noise Amplifiers for Ultra-Wideband Communications covers: Ultra-wideband overview and system approach Distributed amplifiers Wideband low-noise amplifiers Feedback wideband low-noise amplifiers Inductorless techniques
Publisher: McGraw Hill Professional
ISBN: 0071824448
Category : Technology & Engineering
Languages : en
Pages : 129
Book Description
Cutting-edge techniques for ultra-wideband, low-noise amplifier design This pioneering resource presents alternatives for implementing power- and area-efficient integrated low-noise amplifiers for ultra-wideband communications. Design methodologies for distributed amplifiers, feedback amplifiers, inductor structures with reduced area, and inductorless techniques are discussed. Cowritten by international experts in industry and academia, this book addresses the state of the art in integrated circuit design in the context of emerging systems. Design of Low-Noise Amplifiers for Ultra-Wideband Communications covers: Ultra-wideband overview and system approach Distributed amplifiers Wideband low-noise amplifiers Feedback wideband low-noise amplifiers Inductorless techniques
Required Signal-to-noise Ratios for HF Communication Systems
Author: Hiroshi Akima
Publisher:
ISBN:
Category : Radio noise
Languages : en
Pages : 68
Book Description
Values of required signal-to-noise ratios are estimated for the following HF communication systems: amplitude-modulation (AM) voice communications systems, noncoherent frequency-shift-keying (NCFSK) radioteletypewriter systems, composite voice and teletypewriter systems, aural-reception radiotelegraphy, and phototelegraphy (facsimile). Except for NCFSK systems, for which certain aspects of the basic performance had to be evaluated in the course of this study, values of required signal-to-noise ratios are estimated from published data in the open literature.
Publisher:
ISBN:
Category : Radio noise
Languages : en
Pages : 68
Book Description
Values of required signal-to-noise ratios are estimated for the following HF communication systems: amplitude-modulation (AM) voice communications systems, noncoherent frequency-shift-keying (NCFSK) radioteletypewriter systems, composite voice and teletypewriter systems, aural-reception radiotelegraphy, and phototelegraphy (facsimile). Except for NCFSK systems, for which certain aspects of the basic performance had to be evaluated in the course of this study, values of required signal-to-noise ratios are estimated from published data in the open literature.
Required Signal-to-noise Ratios, RF Signal Power, and Bandwith for Multichannel Radio Communications Systems
Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category : Radio
Languages : en
Pages : 196
Book Description
A method is outlined for determining the relationships between the grade of performance, or message error rate, of a radio communication system and the system parameters. Results are presented in the form of design equations and system-design curves. The system parameters and variables considered are the following definable and measurable factors: signal-to-noise ratios, carrier signal power level, message load, receiver noise figure, etc. These factors are used with the design curve scales as normalizing factors in order to yield quantitative results.
Publisher:
ISBN:
Category : Radio
Languages : en
Pages : 196
Book Description
A method is outlined for determining the relationships between the grade of performance, or message error rate, of a radio communication system and the system parameters. Results are presented in the form of design equations and system-design curves. The system parameters and variables considered are the following definable and measurable factors: signal-to-noise ratios, carrier signal power level, message load, receiver noise figure, etc. These factors are used with the design curve scales as normalizing factors in order to yield quantitative results.
The Measurement of Noise Performance Factors
Author: M. G. Arthur
Publisher:
ISBN:
Category : Noise
Languages : en
Pages : 214
Book Description
The metrology guide provides the basis for critical comparisons among seven measurement techniques for average noise factor and effective input noise temperature. The techniques that are described, discussed, and analyzed include the (1) Y-Factor, (2) 3-dB, (3) Automatic, (4) Gain Control, (5) CW, (6) Tangential, and (7) Cmparison Techniques. The analyses yield working equations and error equations by which accuracy capabilities are compared. Each technique is also analyzed for (a) frequency range for best measurement results, (b) special instrumentation requirements, (c) speed and convenience, (d) operator skill required, and (e) special measurement problems. General instrumentation requirements and practical measurement problems are discussed for the benefit of the non-expert metrologist. (Modified author abstract).
Publisher:
ISBN:
Category : Noise
Languages : en
Pages : 214
Book Description
The metrology guide provides the basis for critical comparisons among seven measurement techniques for average noise factor and effective input noise temperature. The techniques that are described, discussed, and analyzed include the (1) Y-Factor, (2) 3-dB, (3) Automatic, (4) Gain Control, (5) CW, (6) Tangential, and (7) Cmparison Techniques. The analyses yield working equations and error equations by which accuracy capabilities are compared. Each technique is also analyzed for (a) frequency range for best measurement results, (b) special instrumentation requirements, (c) speed and convenience, (d) operator skill required, and (e) special measurement problems. General instrumentation requirements and practical measurement problems are discussed for the benefit of the non-expert metrologist. (Modified author abstract).
Wideband Low Noise Amplifiers Exploiting Thermal Noise Cancellation
Author: Federico Bruccoleri
Publisher: Springer Science & Business Media
ISBN: 1402031882
Category : Technology & Engineering
Languages : en
Pages : 191
Book Description
Low Noise Amplifiers (LNAs) are commonly used to amplify signals that are too weak for direct processing for example in radio or cable receivers. Traditionally, low noise amplifiers are implemented via tuned amplifiers, exploiting inductors and capacitors in resonating LC-circuits. This can render very low noise but only in a relatively narrow frequency band close to resonance. There is a clear trend to use more bandwidth for communication, both via cables (e.g. cable TV, internet) and wireless links (e.g. satellite links and Ultra Wideband Band). Hence wideband low-noise amplifier techniques are very much needed. Wideband Low Noise Amplifiers Exploiting Thermal Noise Cancellation explores techniques to realize wideband amplifiers, capable of impedance matching and still achieving a low noise figure well below 3dB. This can be achieved with a new noise cancelling technique as described in this book. By using this technique, the thermal noise of the input transistor of the LNA can be cancelled while the wanted signal is amplified! The book gives a detailed analysis of this technique and presents several new amplifier circuits. This book is directly relevant for IC designers and researchers working on integrated transceivers. Although the focus is on CMOS circuits, the techniques can just as well be applied to other IC technologies, e.g. bipolar and GaAs, and even in discrete component technologies.
Publisher: Springer Science & Business Media
ISBN: 1402031882
Category : Technology & Engineering
Languages : en
Pages : 191
Book Description
Low Noise Amplifiers (LNAs) are commonly used to amplify signals that are too weak for direct processing for example in radio or cable receivers. Traditionally, low noise amplifiers are implemented via tuned amplifiers, exploiting inductors and capacitors in resonating LC-circuits. This can render very low noise but only in a relatively narrow frequency band close to resonance. There is a clear trend to use more bandwidth for communication, both via cables (e.g. cable TV, internet) and wireless links (e.g. satellite links and Ultra Wideband Band). Hence wideband low-noise amplifier techniques are very much needed. Wideband Low Noise Amplifiers Exploiting Thermal Noise Cancellation explores techniques to realize wideband amplifiers, capable of impedance matching and still achieving a low noise figure well below 3dB. This can be achieved with a new noise cancelling technique as described in this book. By using this technique, the thermal noise of the input transistor of the LNA can be cancelled while the wanted signal is amplified! The book gives a detailed analysis of this technique and presents several new amplifier circuits. This book is directly relevant for IC designers and researchers working on integrated transceivers. Although the focus is on CMOS circuits, the techniques can just as well be applied to other IC technologies, e.g. bipolar and GaAs, and even in discrete component technologies.