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Whether analog or digital, information is represented by the fundamental quantity in electrical engineering: the signal . Stated in mathematical terms, a signal is merely a function. Analog signals are continuous-valued; digital signals are discrete-valued. The independent variable of the signal could be time (speech, for example), space (images), or the integers (denoting the sequencing of letters and numbers in the football score).
306 p dtu 20/11/2012 170 2
Từ khóa: Signals Systems, hệ thống tín hiệu, kỹ thuật số, digital signals, kỹ thuật tín hiệu, tín hiệu kỹ thuật số
This text provides a complete introduction to signal analysis. Inclusion of fundamental ideas—analog and discrete signals, linear systems, Fourier transforms, and sampling theory—makes it suitable for introductory courses, self-study, and refreshers in the discipline. But along with these basics, Signal Analysis: Time, Frequency, Scale, and Structure gives a running tutorial on functional analysis—the mathematical concepts that...
955 p dtu 20/11/2012 194 4
Từ khóa: Signal analysis, discrete signals, tín hiệu rời rạc, linear systems, hệ thống tuyến tính, signal theory
Smart antennas involve processing of signals induced on an array of sensors such as antennas, microphones, and hydrophones. They have applications in the areas of radar, sonar, medical imaging, and communications. Smart antennas have the property of spatial filtering, which makes it possible to receive energy from a particular direction while simultaneously blocking it from another direction. This property makes smart antennas a very effective...
458 p dtu 20/11/2012 181 2
Từ khóa: smart antennas, processing of signals, ănten thông minh, xử lý tín hiệu, communications system, thông tin liên lạc
Signal processing for mobile communications
Signal processing (SP) is a key research area in mobile communications. The recent years have known a real explosion in research addressing different aspects of mobile communications signal processing. This area is continuously expanding with emerging applications and services such as interactive multimedia and Internet. SP has to meet the new challenges presented to future mobile communication systems such as very low bit error rates, very...
812 p dtu 20/11/2012 212 4
Từ khóa: Signal processing, mobile communications, xử lý tín hiệu, truyền thông di động, communication systems, thông tin liên lạc
The performance of digital signal processing and communication systems is generally limited by the precision of the digital input signal which is achieved at the interface between analog and digital information. Sigma-Delta (S-D) modulation based analog-todigital(A/D) conversion technology is a cost effective alternative for high resolution (greater than 12 bits) converters which can be ultimately integrated on digital signal processor ICs.
71 p dtu 15/11/2012 180 1
Từ khóa: Motorola Digital Signal, signal processing, communication systems, xử lý tín hiệu, hệ thống thông tin, công nghệ thông tin
Theory and Problems of Signals and Systems
The concepts and theory of signals and systems are needed in almost all electrical engineering fields and in many other engineering and scientific disciplines as well. They form the foundation for further studies in areas such as communication, signal processing, and control systems. This book is intended to be used as a supplement to all textbooks on signals and systems or for selfstudy. It may also be used as a textbook in its own right....
483 p dtu 10/11/2012 231 4
Từ khóa: Signals Systems, electrical engineering, signal processing, xử lý tín hiệu, hệ thống điều khiển, lý thuyết tín hiệu
Digital Signal Processing System-Level Design Using LabVIEW
For many years, I have been teaching DSP (Digital Signal Processing) lab courses using various TI (Texas Instruments) DSP platforms. One question I have been getting from students in a consistent way is, “Do we have to know C to take DSP lab courses?” Until last year, my response was, “Yes, C is a prerequisite for taking DSP lab courses.” However, last year for the first time, I provided a different response by saying, “Though...
305 p dtu 07/11/2012 210 1
Từ khóa: xử lý tín hiệu, kỹ thuật số, thiết kế hệ thống, Digital Signal Processing System, DSP systems, Texas Instruments