What is the difference between communication and information systems, signals and signal processing?

The differences between the two are as follows:

1. The communication and signal system major includes system simulation, multiple access technology, digital modulation and demodulation technology, channel dynamic assignment technology, synchronization technology, multi-user detection technology, voice compression technology, broadband multi-** technology and radio frequency technology of digital mobile communication system.

Research on the composition, new technologies and performance analysis of various digital microwave communications, mobile communications and satellite communication systems, as well as WLAN, WMAN, AD-ROC networks, including SDH technology and commonly used coding, modulation and demodulation, synchronization and signaling modes, multiple access and network security in these systems.

and other technology research and development.

2. The signal and information processing major is based on modern signal processing, and studies various intelligent processing technologies to improve the effectiveness and reliability of communication and information systems and their applications in mobile communications, multi-professional communications, broadband access and IP networks. His current focus is on next-generation wireless communications.

A variety of advanced intelligent signal processing technologies in the network, such as blind separation of communication signals, blind channel identification and equalization, multi-carrier modulation, multi-user detection, space-time joint processing, source-channel coding, and various adaptive technologies in the network environment.

Information and communication engineering is a first-level discipline.

It consists of two sub-disciplines: communication and information system and signal and information processing.

It is a comprehensive major with a wide range of basic knowledge and a wide range of application fields for electronic information disciplines, involving signals and systems, and digital signal processing.

Communication Principles, DSP, Embedded, Wireless Communication, Multi-Communication, Image Processing, Electromagnetic Field and Microwave Technology, Medical X-ray.

The function of signal conversion and hail processing technology is to use it with various instruments in the industrial automation control system to realize the conversion of standard signals into switching quantities and replace the output of PLC under certain conditions.

Classification of common signal conversion and processing techniques.

Analog-to-digital conversion: is a type of analog signal that can be converted.

Transform into a digital signal.

electronic components. Signals are typically sampled and persisted before being quantized and encoded, both of which are done at the same time as the conversion.

Analog-to-digital conversion generally goes through several steps: sampling, holding, quantization, and encoding. In actual circuits, some processes are combined, such as sampling and holding, quantization and encoding are implemented simultaneously during the conversion process.

Digital-to-analog conversion. It is a device that converts a continuous analog signal into a discrete digital signal. by the digital system.

The processed digital quantities, which are sometimes converted to analogue quantities for practical use, are called "digital-to-analog conversions".

DAC is primarily composed of digital registers.

Analog electronic switches, bit-weight networks, summation op amps.

and a voltage reference (or constant current source). Each digit stored in the digit register of the digit is used to control the analog electronic coarse switch of the corresponding bit respectively, so that the bit with the digit of 1 generates a current value proportional to its bit weight on the bit weight network, and then the current value is summed by the operational amplifier and converted into a voltage value.

1. Arithmetic mean filtering method The arithmetic mean filtering method refers to the careful use of n values for a little bit of data, and then taking the average value. This method can filter out the general random interference signal bridge and make the signal smooth, but when the n value is large, it will be smooth

This question is too big to ask, because signal processing is a very large basic callous course, and his research party Sun Shouxiang is also very large, so he can't use any other methods to describe it.

"Letter Buried Shenmu No. Processing Technology" is a book published by Wuhan University of Technology Press in November 2001, and the blind group is Xu Kejun. This book introduces the basic principles, methods and applications of the processing technology of the Xinwansen.

The differences between the two are as follows:

1. The communication and signal system major includes system simulation, multi-access technology excavation, digital modulation and demodulation technology, channel dynamic assignment technology, synchronization technology, multi-user detection technology, voice compression technology, broadband multi-technology and radio frequency technology of digital mobile communication system. Research on the composition, new technology and performance analysis of various digital microwave communication, mobile communication and satellite communication systems, as well as WLAN, WMAN, AD-ROC networks, and including SDH technology and the research and development of coding, modulation and demodulation, synchronization and signaling modes, multiple access and network security technologies commonly used in hail response of the above systems.

2. The professional judgment of signal and information processing is based on modern signal processing, and studies various intelligent processing technologies to improve the effectiveness and reliability of communication and information systems and their applications in mobile communications, multi-professional communications, broadband access and IP networks. At present, he focuses on the research of various advanced intelligent signal processing technologies in the new generation of wireless communication networks, such as blind separation of communication signals, blind channel identification and equalization, multi-carrier modulation, multi-user detection, space-time joint processing, source-channel coding, and various adaptive technologies in the network environment.

Information and communication engineering is a first-level discipline, which consists of two second-level disciplines: communication and information system and signal and information processing. It is a comprehensive major with a wide range of basic knowledge and broad application fields for electronic information disciplines, involving many high-tech fields such as signal and system, digital signal processing, communication principle, DSP, embedded, wireless communication, multi-technology, image processing, electromagnetic field and microwave technology, medical X-ray digital imaging, array signal processing and phase space wave propagation and imaging, and satellite mobile.

First, the concept is different.

1. Signal and system: It is a professional course for undergraduate students of electrical information, students should be proficient in the basic concepts, basic theories and basic analysis methods described in this course, and use these classical theories to analyze, interpret and calculate the problems of signals, systems and their constraints.

2. Principles of modern communication: It is an engineering discipline, which is mainly based on mastering the basic theory of communication, and using various engineering methods to deal with some practical problems in communication.

Second, the research direction is different.

1. Signal and system: basic knowledge of signal and system; Time-domain analysis of continuous signals and systems; Signal and system transformation domain analysis; Discrete signal and system time domain analysis; system functions; Analysis of signals and system state variables.

2. Modern communication principles: can master the principles of various communication systems such as the first network, radio and television network, and the Internet, study the technology to improve the speed of information transmission, design new communication systems according to actual needs, and develop communication tools that can quickly and accurately transmit various information.

Third, the direction of employment is different.

1. Signal and system: engaged in the preparation and debugging of software programs, the design and commissioning of hardware systems, the design and maintenance of communication networks, the design and implementation of communication systems, and the provision of various technical services for customers.

2. Principles of modern communication: communication operation and management, communication equipment manufacturing, national defense, diplomacy, security, public security, broadcasting, transportation, civil aviation, factories and mines and other industries.

1. Research direction.

1) Signal and Signal Processing, the main research directions include: basic theoretical research on signal and information processing; underwater acoustic target detection and identification technology; integrated processing of underwater acoustic signal transmission and multi-sensor information; Wireless communication and network theory and technology; Affective computing and intelligent information processing for image and speech.

2) Major in communication and information systems, the main research directions include: theory and application of mobile communication networks and systems; broadband wireless transmission and multiple access technology; modern signal processing and its application in mobile communications; short-range wireless communication and ubiquitous networks; Information Theory and Coding.

2. Employment prospects.

1) Communication and information system major, engaged in research, design, manufacturing, operation in the field of communication, and engaged in the development and application of communication technology and equipment in various sectors of the national economy and the national defense industry.

2) Signal and signal processing, graduates can be engaged in information technology management and computer software and hardware research and development in electronics and communications, finance, commerce and other enterprises; Engage in scientific research and teaching in communication and information technology research institutions and teaching departments, and be a civil servant.

Signal and system are used in China's higher education, and the rise of signal and system in China's higher education is not long, but it is a compulsory core basic course for electronics majors, and the course is mainly based on mathematical analysis, which involves mathematical and physical methods, concepts, etc. are widely used in many fields such as communication, signal and information processing, electronics, computer science and technology, automatic control, circuits and systems. The relevant concepts and analytical methods covered in this course are its main areas of study.

In the signal and system, the corresponding mathematical model is established, and then the solution is analyzed according to the mathematical model, so as to give the obtained results physical interpretation and corresponding physical meaning.

1. The concept is different.

The main objects of the discipline of communication and information systems are various communication and information systems with information acquisition, information transmission and exchange, information network, information processing and information control as the main body.

Signal and information processing is a second-level discipline under the first-level discipline of information and communication engineering. At present, the core discipline of information technology provides basic theories, basic methods, practical algorithms and implementation schemes for communication, computer applications, and various information processing technologies.

2. The purpose is different.

The communication and information air bucket system cultivates senior engineering and technical personnel who have knowledge of communication systems and communication networks, and can engage in research, design, manufacturing, and operation in the field of communications, as well as the development and application of communication technology and equipment in various sectors of the national economy and the national defense industry.

Signal and information processing explores the analysis and synthesis methods of signals, studies the basic ways and practical algorithms for extracting information from signals, develops new theories and technologies for the encoding and decoding of various signals and information, and improves the effectiveness and reliability of signal transmission and storage.

3. Employment prospects are different.

The Department of Communication and Information Systems is engaged in research, manufacturing, and operation in the field of communications, as well as advanced engineering technology for the development and application of communication technologies and equipment in various sectors of the national economy and the defense industry.

Graduates majoring in signal and information processing can be engaged in information technology management and computer software and hardware research and development in electronics and communications, finance, commerce and other enterprises. Engage in scientific research and teaching in communication and information technology research institutions and teaching departments, and be a civil servant.