scispace - formally typeset
Search or ask a question
Topic

Digital signal

About: Digital signal is a research topic. Over the lifetime, 44213 publications have been published within this topic receiving 345279 citations.


Papers
More filters
Patent
18 May 1994
TL;DR: In this paper, the authors proposed a digital signal encoding apparatus in which the digital signal is divided into frequency components in plural frequency bands and the bandwidth of the frequency bands is.Iaddend.
Abstract: This invention relates to a digital signal encoding apparatus in which the .[.width of the range in.]. .Iadd.digital signal is divided into frequency components in plural frequency bands and the bandwidth of the frequency bands is .Iaddend.selected to be wider for .[.the.]. higher .[.frequency range.]. .Iadd.frequencies .Iaddend.of the digital .[.signals divided into a plurality of regions.]. .Iadd.signal .Iaddend.and in which the encoded signals are synthesized for the respective .[.ranges.]. .Iadd.frequency bands .Iaddend.wherein encoding is controlled as a function of the output detecting the characteristics of the .Iadd.frequency .Iaddend.components .[.of.]. .Iadd.in .Iaddend.the .[.divided.]. frequency .Iadd.bands .Iaddend.and the detection time interval is selected to be longer for the lower frequency .Iadd.bands .Iaddend.to enable more efficient encoding to be performed as a function of the properties of input digital signals.

82 citations

Journal ArticleDOI
J. Bartram1
TL;DR: This book discusses DIGITAL COMMUNICATION SYSTEMS, the philosophy and design of which are at the heart of the modern digital communications system, and its applications, as well as other topics.
Abstract: DIGITAL COMMUNICATION ADVANTAGES AND DISADVANTAGES TOTALECER. INTRODUCTION TO DIGITAL COMMUNICATIONS DIGITAL. INTRODUCTION TO EECS II DIGITAL COMMUNICATION SYSTEMS. PRINCIPLES OF DIGITAL COMMUNICATION SHARIF UNIVERSITY OF. SIMON S HAYKIN DIGITAL COMMUNICATION SYSTEMS WILEY 2013. DIGITAL COMMUNICATION SYSTEMS. DIGITAL COMMUNICATION SYSTEMS NPTEL. DIGITAL COMMUNICATION SYSTEM MODULATION BANDWIDTH. DIGITAL COMMUNICATION SYSTEMS FREE EBOOKS DOWNLOAD. COMMUNICATION SYSTEMS ANALOG VS DIGITAL WIKIBOOKS OPEN. DIGITAL COMMUNICATION SYSTEMS WILEY COM. COMMUNICATION SYSTEMS II. DIGITAL COMMUNICATION DEFINITION OF DIGITAL. MODERN DIGITAL AND ANALOG COMMUNICATION THE AMAZON COM. DIGITAL COMMUNICATION SYSTEMS MCQ SERIES. DIGITAL COMMUNICATIONS FUNDAMENTALS AND APPLICATIONS. DIGITAL COMMUNICATION SYSTEMS 1ST EDITION AMAZON COM. DIGITAL COMMUNICATIONS SYSTEMS MASTER’S DEGREE. DIGITAL COMMUNICATION SYSTEM SLIDESHARE. DIGITAL COMMUNICATION SYSTEMS GOOGLE BOOKS. ANALOG AND DIGITAL COMMUNICATION SYSTEMS BY MARTIN S RODEN. WILEY DIGITAL COMMUNICATION SYSTEMS 1ST EDITION SIMON. DIGITAL COMMUNICATION SYSTEM MANAGEMENT STUDY GUIDE. DIGITAL MODULATION IN COMMUNICATIONS SYSTEMS – AN INTRODUCTION. DATA TRANSMISSION WIKIPEDIA. DIGITAL COMMUNICATION SYSTEMS EBOOK BY SIMON HAYKIN. DESIGN OF A DIGITAL COMMUNICATION SYSTEM SIGNAL PROCESSING. DIGITAL COMMUNICATIONS J S CHITODE GOOGLE BOOKS. INTRODUCTIONTOCOMMUNICATIONSYSTEMS UC SANTA BARBARA. INTRODUCTION TO DIGITAL COMMUNICATION MIT OPENCOURSEWARE. INTRODUCTION TO DIGITAL COMMUNICATIONS SYSTEM. DCSL DIGITAL COMMUNICATION SYSTEMS LIMITED. TYPES OF DIGITAL COMMUNICATION TECHWALLA COM. TELECOMMUNICATION WIKIPEDIA. DIGITAL COMMUNICATION SYSTEMS UNIVERSITY OF OTTAWA. DIGITAL COMMUNICATION BY SIMON HAYKIN PDF 4ED TOTALECER. FUNDAMENTALS OF DIGITAL COMMUNICATIONS SYSTEMS 1 1. COMMUNICATION SYSTEMS ADVANTAGES OF DIGITAL TRANSMISSION. 3 INTRODUCTION TO DIGITAL COMMUNICATION SYSTEMS YOUTUBE. DIGITAL COMMUNICATION SYSTEMS SLIDESHARE. THEORY AND DESIGN OF DIGITAL COMMUNICATION SYSTEMS. ELEMENTS OF A DIGITAL COMMUNICATION SYSTEM. DIGITAL COMMUNICATION SYSTEMS UOTECHNOLOGY EDU IQ. ELEMENTS OF DIGITAL COMMUNICATION SYSTEMS. DIGITAL AND ANALOG COMMUNICATION SYSTEMS. DIGITAL AMP ANALOG COMMUNICATION SYSTEMS 8TH EDITION PDF. DIGITAL COMMUNICATION SYSTEM QUESTIONS AND ANSWERS. DIGITAL COMMUNICATIONS TRAINING SYSTEMS LAB VOLT. DIGITAL COMMUNICATION TUTORIAL. EE2EE2 4 COMMUNICATION SYSTEMS4 COMMUNICATION SYSTEMS

82 citations

Patent
11 Jun 1998
TL;DR: In this article, an actuator is operated to transmit a wireless signal of about 900 MHz, which is sensed with a receiver/caller unit which sends a digital signal over a telephone line to a monitoring center.
Abstract: The invention provides exemplary monitoring systems and methods for their use. In one exemplary method, a person is provided with a transmitter having an actuator. The actuator is operated to transmit a wireless signal of about 900 MHz. The signal from the transmitter is sensed with a receiver/caller unit which sends a digital signal over a telephone line to a monitoring center. This alerts the monitoring center of the actuation of the transmitter. A return signal is sent over the telephone line from the monitoring center to a speaker of the unit to verbally inquiring regarding the actuation of the transmitter.

82 citations

Patent
13 May 2003
TL;DR: In this paper, an RF transmitter includes a reference signal generator, a signal generator and a mixer, and the operating signal has a frequency that equals the frequency of the reference signal multiplied by a number.
Abstract: An RF transmitter includes a reference signal generator, a signal generator, and a mixer. The reference signal generator provides a reference signal that has a prescribed or desired frequency. The signal generator provides an operating signal in response to a selection signal. The operating signal has a frequency that equals the frequency of the reference signal multiplied by a number. The mixer mixes the operating signal with another signal to generate a transmission signal. An RF receiver includes a first mixer, a second mixer, an integrator/sampler, and a signal generator. The first mixer receives as its inputs an input RF signal and a second input signal, and mixes its input signals to generate a mixed signal. The integrator/sampler receives the mixed signal and processes it to provide an output signal. The signal generator provides an operating signal in response to a selection signal. The operating signal has a frequency equal to the frequency of a reference signal, multiplied by a number. The second mixer mixes the operating signal with a template signal to generate the second input signal of the first mixer.

82 citations

Patent
10 Mar 2003
TL;DR: In this paper, the sampling frequency of a digital signal is converted from 96 kHz to 48 kHz for each frame by a down-sampling unit and the signal converted is compressed/encoded and output as a main code Im.
Abstract: The sampling frequency of a digital signal is converted from 96 kHz to 48 kHz for each frame by a down-sampling unit (13). The signal converted is compressed/encoded and output as a main code Im. A local signal corresponding to the main code Im is converted to a signal of sampling frequency of, for example, the original 96 kHz by an up-sampling unit (16) and an error signal between the this signal and an input digital signal is generated. Bits of a sample string of error signals are rearranged by rearrangement/encoding unit (18) and output as an error code Pe. At a decoding side, by using the main code Im and the error code Pe, it is possible to obtain a highly faithful reproduction signal or a reproduction signal based only on the main code Im.

82 citations


Network Information
Related Topics (5)
Amplifier
163.9K papers, 1.3M citations
70% related
Signal
674.2K papers, 4.5M citations
70% related
CMOS
81.3K papers, 1.1M citations
69% related
Integrated circuit
82.7K papers, 1M citations
69% related
Control system
129K papers, 1.5M citations
68% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20239
202225
2021190
2020755
2019942
2018915