Xem 1-20 trên 175 kết quả Modulated signals
  • Global Navigation Satellite System (GNSS) plays a key role in high precision navigation, positioning, timing, and scientific questions related to precise positioning. This is a highly precise, continuous, all-weather, and real-time technique. The book is devoted to presenting recent results and developments in GNSS theory, system, signal, receiver, method, and errors sources, such as multipath effects and atmospheric delays

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Probability of Error of Linearly Modulated Signals with Gaussian Cochannel Interference in

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Analysis of Filter-Bank-Based Methods for Fast Serial Acquisition of BOC-Modulated Signals

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Robustness of digitally modulated signal features against variation in HF noise model

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Spectral Correlation of Multicarrier Modulated Signals and Its Application for Signal Detection

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Efficient Delay Tracking Methods with Sidelobes Cancellation for BOC-Modulated Signals

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  • Receiver structure - Impact of AWGN and ISI on the transmitted signal - Optimum filter to maximize SNR - Matched filter and correlator receiver

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  • This book is intended for courses at least at Masters level to provide an introduction to the field of signal processing in telecommunications. The text therefore deals mainly with source coding, channel coding, modulation and demodulation. Adaptive channel equalisation, the signal processing aspects of adaptive antennas as well as multi-user detectors for CDMA are also included. Shorter sections on link budget, synchronising and cryptography are also included. Network aspects are not discussed and very little is given about wave propagation.

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  • Channel coding:Transforming signals to improve communications performance by increasing the robustness against channel impairments (noise, interference, fading, ..)

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  • Receiver structure -Impact of AWGN and ISI on the transmitted signal -Optimum filter to maximize SNR -Matched filter receiver and Correlator receiver

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  • Introduction to digital modulation Relevant Modulation Schemes (QPSK, GMSK, M-Ary Schemes) Coherent and Differential Reception The impact of the mobile channel on digital modulation – noise and interference – random FM (narrowband fading) – intersymbol interference (wideband fading The bit rate defines the rate at which information is passed. l The baud (or signalling) rate defines the number of symbols per second. Each symbol represents n bits, and has M signal states, where M = 2n. This is called M-ary signalling....

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  • The two fundamental building blocks of a digital communication system are modulation and channel coding. They enable reliable communication by providing signaling schemes and receiver structures that utilize the available spectrum and power efficiently.

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  • This lecture covers the fundamentals of spread spectrum modulation, which can be defined as any modulation technique that requires a transmission bandwidth much greater than the modulating signal bandwidth, independently of the bandwidth of the modulating signal. After reviewing basic digital modulation techniques, the principal forms of spread spectrum modulation are described. One of the most important components of a spread spectrum system is the spreading code, and several types and their characteristics are described.

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  • This volume describes the essential tools and techniques of statistical signal processing. At every stage, theoretical ideas are linked to specific applications in communications and signal processing. The book begins with an overview of basic probability, random objects, expectation, and second-order moment theory, followed by a wide variety of examples of the most popular random process models and their basic uses and properties.

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  • The DS1 Loop Extender (DLX) module is used to extend a DS1 up to 655 feet to a digital cross-connect (DSX-1). The DLX receives a non-return to zero (NRZ) 1.544 Mbps signal from the DS3 Soneplex multiplexer module, converts the NRZ signal to a bipolar DS1 signal and transmits a DS1 signal that meets the industry standard DSX-1 template boundaries as defined by TR- NWT-000499.

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  • The Soneplex Quad Loop Extender (QLX) module converts four multiplexed, DS1 signals into an optical DS2 for delivery over singlemode optical fibers. The optical DS2 is converted back to four DS1s at the customer premises. It supports op- tional 1+1 protection and provides extensive alarms and diagnostic capabilities.

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  • The information contained in Ebook Simatic S7-300 S7-300 Module data can be used as a reference to operating, to functions, and to the technical data of the signal modules, power supply modules and interface modules of the s7 300.

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  • In electronics and telecommunications, modulation is the process of varying one or more properties of a high-frequency periodic waveform, called the carrier signal, with a modulating signal which typically contains information to be transmitted. This is done in a similar fashion to a musician modulating a tone (a periodic waveform) from a musical instrument by varying its volume, timing and pitch. The three key parameters of a periodic waveform are its amplitude ("volume"), its phase ("timing") and its frequency ("pitch").

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  • Reference subjects of digital information in English and fully understandable. This book was written to be a textbook for seniors or first - year graduate students interested in electrical communication systems. The book departs from the usual formata in two major respects. First, the text does not cover analog or pulse modulation systems.

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  • This book provides a comprehensive introduction to the underlying theory, design techniques and analytical tools of wireless communications, focusing primarily on the core principles of wireless system design. The book begins with an overview of wireless systems and standards. The characteristics of the wireless channel are then described, including their fundamental capacity limits. Various modulation, coding, and signal processing schemes are then discussed in detail, including state-of-the-art adaptive modulation, multicarrier, spread spectrum, and multiple antenna techniques....

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