What is Communication: Definition and 323 Discussions

Communication (from Latin communicare, meaning "to share") is the act of developing meaning among entities or groups through the use of sufficiently mutually understood signs, symbols, and semiotic conventions.
In Claude Shannon's and Warren Weaver's influential model, human communication was imagined to function like a telephone or telegraph. Accordingly, they conceptualized communication as involving discrete steps:

The formation of communicative motivation or reason.
Message composition (further internal or technical elaboration on what exactly to express).
Message encoding (for example, into digital data, written text, speech, pictures, gestures and so on).
Transmission of the encoded message as a sequence of signals using a specific channel or medium.
Noise sources such as natural forces and in some cases human activity (both intentional and accidental) begin influencing the quality of signals propagating from the sender to one or more receivers.
Reception of signals and reassembling of the encoded message from a sequence of received signals.
Decoding of the reassembled encoded message.
Interpretation and making sense of the presumed original message.These elements are now understood to be substantially overlapping and recursive activities rather than steps in a sequence. For example, communicative actions can commence before a communicator formulates a conscious attempt to do so, as in the case of phatics; likewise, communicators modify their intentions and formulations of a message in response to real-time feedback (e.g., a change in facial expression). Practices of decoding and interpretation are culturally enacted, not just by individuals (genre conventions, for instance, trigger anticipatory expectations for how a message is to be received), and receivers of any message operationalize their own frames of reference in interpretation.The scientific study of communication can be divided into:

Information theory which studies the quantification, storage, and communication of information in general;
Communication studies which concerns human communication;
Biosemiotics which examines communication in and between living organisms in general.
Biocommunication which exemplifies sign-mediated interactions in and between organisms of all domains of life, including viruses.The channel of communication can be visual, auditory, tactile/haptic (e.g. Braille or other physical means), olfactory, electromagnetic, or biochemical. Human communication is unique for its extensive use of abstract language. Development of civilization has been closely linked with progress in telecommunication.

View More On Wikipedia.org
  1. J

    MATLAB Communication between Arduino and Matlab Help

    I am trying to achieve real time plotting of accelerometer data using an arduino, an Xbee, and Matlab. Usually when the Matlab program gets data, it gets something like this: ~ #� ' X: -2 Y: 20 Z: 4080 t: 33232 ~ !� ' X: 4 Y: 2 Z: 4066 t: 33255 b~...
  2. G

    What's the problem with (non-causal) nonlocality?

    Hi, In all the discussions about EPR, Bell's inequality and interpretations of QM locality seems to be a property that nobody likes to drop light-heartedly. This is somehow understandable since SR is an extremely successful theory. But SR only says that we cannot transmit information faster...
  3. Alex299792458

    Quantum Entanglement Communication

    Can two entangled particles communicate or tell the other particle which quantum state it sould go in if one particle is in a black hole and if so can they communicate if both are inside a black hole?
  4. L

    Engineering Tuning circuit in mobile handset system

    Studying about Communication Skills specifically about mobile handset and how do they transmit and receive signals etc. I came across this question which states "Why does a mobile phone handset have a tuning circuit for reception stage but not for transmission? The attempt at a solution I was...
  5. K

    Left/Right Communication with Alien Race by Richard Feynman

    Hi all, I was thinking about the problem and can someone verify my solution : 1) Set up a Magnetic field going from down to up, i.e north pole is at the bottom. 2) Use the triboelectric series to charge some small particle positive (hair or glass with teflon) 3) Throw that particle in forward...
  6. S

    Hypothetical FTL communication black-boxes and causality

    I found the thread "SR, LET, FTL & Causality Violation", looked through through all of it and read large parts. I believe I found my answer there, but to make sure, I'm asking the question here: Suppose we had some "magical" black-boxes that allow us to communicate information in both...
  7. G

    Digital Transmission and Twisted Wires

    Homework Statement I am currently embarking on a project where I have to build a communications system which can take in an analog voice signal, translate it into digital signal, and send it across to the receiver where the original voice gets recovered and it can be played back using a...
  8. AdityaDev

    Changing electric field and refractive index

    I am learning sky wave propagation and in my book, a relation between refractive index, dielectric constant and electro field strength is given. \mu=\mu_0\sqrt{1-\frac{Ne^2}{\epsilon_0m\omega^2}} Is this a form of Kerr opto-electric effect? How do you get this expression? If you think I cannot...
  9. Dark_Capacitor

    Why AM wave is multiplication of carrier and message signal?

    Let A= (sin(x) * sin(100x)) + sin(100x).; modulation index is 1; Let B= (sin(x) + sin (100x)); Both of these waves have same frequency and both are amplitude modulated. When passed through an envelope detector, both will give message signal. And B have an advantage of not having any sideband...
  10. G

    Frame Synchronisation via Modified Approach to Bit Insertion

    Homework Statement I am currently embarking on a project which requires me to design a system where I can transmit voice over a distance, by inputting an analog voice signal on one end and then recovering the voice which I input on the transmitting end at the receiving end. The general design...
  11. P

    BPSK Fiber Optic Communication technique module.

    Actually out of my personal interest to learn & upgrade my skills I have self volunteered self development of Photonics Simulation software on Python platform. I am basically a software developer. As such I seek some technical information for same related to its development activity. Can you...
  12. A

    Engineering Writing as an Aerospace Engineer?

    Greetings, I am writing a paper for my university English class. The purpose of it is to recognize or acknowledge the amount of writing (or lack thereof) in our future career choice. As an Aerospace Engineering major, I want to find out if writing is a big part of Aerospace Engineering. I have...
  13. blue_leaf77

    Is Short Communication Appropriate for Mathematical Analysis Revisions?

    So I noticed a mistake in the mathematical analysis in a paper and I want to propose the revised version. What should I do? I think it doesn't worth a journal since the revision probably only takes a page. Is there other ways of doing such revision? I have heard there is this short...
  14. I_am_learning

    Book suggestions for communication systems?

    I am an EE graduate and I haven't had any pre-exposure to any signal analysis and communications course (I did mostly machines, power systems and control systems(where I have known about frequency domain)). I want to start learning about communication systems, from the early radios to the...
  15. N

    Communication with past and future?

    I have a question about quantum entanglement. If quantum entanglement can cause particles to travel through time and space does that mean we can use them to communicate with the future or past. Say I build a device on Monday that recives and transmits such particles would I be able talk to my...
  16. RAHIL008

    Why Is Binary Modulation Preferred in Visible Light Communication?

    I read that for VLC, they use toggling the LEDs ON/OFF to represent binaries. Why cannot we modulate the visible light like radio waves.
  17. E

    Find the Frequency Spectrum of an optical communication link

    Homework Statement 2. Homework Equations 10 Log[10](g/mW)= GdBw The Attempt at a Solution I have attached a document of my approach to this question. I would like to know if my approach is correct? Thank you for your assistance
  18. B

    What types of formatting allow for better communication?

    My best friend currently acts as a proxy to explain my ideas to other people, and he says that while my logic is generally correct, my premises and conclusions are difficult to connect because I don't stay on a particular topic easily during a conversation. This is partially because I pull from...
  19. G

    Exploring a Theory for FTL Communication

    OK, just had a thought. And I would be grateful if someone could explain why this couldn't work:Place A is on a surface Place B in on the same surface but, say 10,000 miles away from Place A. Therefore communication between them is limited the speed of light . But what if, at Place A there was...
  20. G

    Digital Communication Systems - Autocorrelation

    Homework Statement A white noise process W(t) with unity (N_0/2 = 1) power spectral density is input to a linear system. The output of the linear system is X(t), where X(t) = W(t) - W(t - 1) Determine the autocorrelation of X(t) and sketch it. Homework Equations Let τ denote a time...
  21. M

    MHB Minimal number of successful communication

    Hey! :o I got stuck with the following exercise: There are three armies A,B,C. Between the armies A and B there is a mountain. Only A and B together can beat the army C. A and B can only comminicate with a pigeon. But it is not sure that the pigeon gets to the other side of the mountain...
  22. C

    Equation of SNR versus sigma square for BPSK

    I would like to know in the following equation (attached) how can I incorporate BER for BPSK? is BER the same as Rc? The equation is relation between SNR and sigma square.
  23. F

    Questions about Communication Protocols

    I work as a project engineer of electrical equipment for substations. More and more I have to deal with the communication of these equipment with PLC and other equipments. But I really don't know much about this area. For example, we have Modbus, Profibus, IEC-61850... every now and then I have...
  24. Mandy mae

    Communication between universes

    I will spare all the background, and simply as my question. Does anyone know of any current research being done on communication between universes in relation to multiverse theory? Laugh at you will at the concept. I am currently collecting data and baselines for evaluating occurrences, and...
  25. Govind_Balaji

    Radio waves for two way communication?

    Suppose I have a transmitter and receiver and my friend in the next room also has it. Can we both talk with each other with radio waves as we do in cell phone. I know we can't talk if he is several miles apart. But if he is just in the next room, can we communicate?
  26. V

    Engineering Communication and electronics vs mechanical vs civil engineering

    hello everybody, I will Study Engineering and I'm thinking to take your opinions in the major that i will study I'm Confused between communication and electronics engineering, mechanical engineering or civil engineering. I care about the job-market which one is the most requested ? . which...
  27. I

    Text book recommendation on "Electronics and Communication"

    Hello, I have an optional course this upcoming semester on "Electronics and Communication" for which the course syllabus is roughly: Field effect transistors, transistor circuits, Operational Amps, analogue to digital conversion (and vice versa), combinational circuits, sequential...
  28. M

    Entanglement, ftl communication and destruction of the entangled state

    my question is about the no-communication theorem in quantum mechanics: Assume that i have a pair of entangled photons which are entangled on their polarization. also assume that i send one to alice and another to bob. and alice wants to send a message to bob. no communication theorem states...
  29. D

    Quantum entanglement and communication

    Quantum entanglement is a concept that has captured my imagination and has intrigued me very much in the past few years in which I've become interested in quantum physics. Immediately upon reading about it for the first time, I realized that quantum entanglement could be applied in a new...
  30. S

    What should i do to improve my english communication skills?

    Well many people in this forum suggested me to improve my English in many of my threads. So I am looking forward to do that. Should i read the whole dictionary? Which books should i start reading? I am also weak in grammar. One more thing I am also bad in my English handwriting. Well I have 2...
  31. B

    Doppler Shift: Communication from a Space Probe

    Homework Statement Space probes communicate with controllers on Earth using radio waves. Suppose a probe has a radio-transmitter that operates at a frequency of 516.0 MHz when at rest relative to the observer. This probe is now wandering the solar system. The signal you pick up from the probe...
  32. R

    Xbee+arduino communication problem

    I tried testing the system and I’m not sure if the problem is with the xbee’s, the transmitting code, or the recieveing code. Before I post my code I will explain what we are doing with the signals. We have three analog EMG signals that will be sent serially through on xbee using an arduino...
  33. B

    Entanglement Swapping Superluminal Communication

    I'm wondering whether or why quantum entanglement swapping or steering could or couldn't be used for superluminal communication. Below is a thought experiment. Setting aside the technological barriers do the laws of physics prevent this? On Earth Base Alpha: EPR Sources Entangle Numbered...
  34. M

    Entanglement Swapping and FTL Communication

    Recent experiments realized the thought experiment of Asher Peres on entanglement swapping. Here's the abstract. Couldn't Alice and Bob in the experiment receive information faster than light from Victor? Here's the set up...
  35. S

    Optical Fiber Attenuation for 1550nm FBG Sensor

    what could be the attenuation for optical fiber used in fiber Bragg grating sensor with a operating wavelength of around 1550nm
  36. G

    In Digital communication world

    What is the relation between the Energy (E), power (P) and transmission rate (R)?
  37. A

    Computer networks Data communication assignment help please

    Homework Statement I have an assignment for Data communication module but the assignment is based on networking. we were given two tables, which we have to fill in. table no -1 is https://www.dropbox.com/s/2mo4faeuau9mw6m/Screen%20Shot%202013-10-31%20at%2018.54.09.png Homework Equations The...
  38. K

    How Can Slave Devices Initiate Communication on an RS-485 Network?

    Hi all, I am working on a project that currently uses an RS-485 network with up to 32 slave devices (pic18f's with various IO and a max 483 driver) connected back to a master PC. The system is running fine, but it could be better. The only time the master needs data from a device is when a...
  39. I

    Wireless engineering communication QAM

    Homework Statement On a HSDPA multicode peak rate of wireless communication Channel Coding rate: 3/4. How was the value 7.2 Mbps found using 10 codes of a 16 QAM modulation using signal processing path.Homework Equations Not sureThe Attempt at a Solution I feel bad in saying this, but I have...
  40. O

    Exploring Scalar Wave Communication

    First I didn't know where to open new tread, so I open hear, if I put in wrong section please teach me where is the write place. As amateur in Physics I saw somewhere that with scalar waves you can communicate in transmitter-receiver way of course if resonance between t-r is good. Can we, and...
  41. R

    Neutrino Communication Problem

    Homework Statement I need some help understanding the following problem: A distant, advanced civilization wishes to make contact with us using neutrinos rather than photons as the transmitting medium to avoid problems of obscuration along the line of sight. Suppose they use an \bar{\nu_e}...
  42. D

    Communication by means of entanglement for the layman

    Hello, I'm currently working on the background for a science fiction collection of short stories I am working on, and communication by means of entanglement plays a big role in it, and I want to make sure that I get it right. So here it comes. As I understand it, particles can become...
  43. G

    Delayed Choice Quantum Eraser communication

    Hi all, Okay, I'm writing this post keeping in mind that FTL communication (or even backward in time communication) are impossible. However, I fail to understand why this would be impossible using the delayed choice quantum eraser, so my question is: where is the error in my logic here...
  44. atyy

    Acoustic communication impossible in even-D

    Arnold, an in interview with Lui in Notices of the AMS, Volume 44, no 4, p432 says: "It is a far-reaching generalization of the well-known fact of the impossibility of acoustic communication in the even-dimensional spaces (for instance, in the “plane” world), while in our three-dimensional...
  45. wheelersbit

    Texas A&M Photonless Communication

    Here is the article: http://www.science.tamu.edu/articles/Texas+A%26M+Researcher+Helps+Discover+an+%22Almost+Psychic%22+Photonless+Communication Can someone explain how this differs from entanglement - is it as simple as these particles no longer have to be entangled to relay information...
  46. C

    Your assignment: Design a post-apocalyptic communication system

    I'm a programmer but weak on hardware so I'd appreciate your help. In a novel I'm writing there are about one hundred underground cities housing one million people in the US; the rest of our population is dead. Somewhat smaller percentage of survivors in Europe and Asia. We have several years...
  47. B

    Why wouldn't this experiment allow superluminal communication?

    I know there's a flaw here as superluminal communicaton is impossible. I was considering this scenario: As with the initial stage of the delayed time quantum eraser experiment, put two light sources through a beta barium borate chrystal creating two pairs of entanged photons. Send one pair...
  48. M

    Will communication ever become impossible?

    First, I want to apologize for my ignorance and for misplacing this thread if there is a cosmology forum it would better fit into. My question is as follows. The universe is expanding at an ever-accelerating rate. Will the rate of expansion ever exceed the velocity of virtual photons traveling...
  49. P

    Help with Hertz and BPS in communication channels

    Hi, I am researching communication channels such as UTP, coax etc and I keep seeing them referred to with either M/k/G bps and MHz. Am i correct in thinking bps is the data transfer speed and Hz is referring to bandwidth as I am getting confused? Thanks
  50. D

    Communication Theory vs. DSP? Differences?

    I have a choice between these two courses next semester and I want to learn a little more about them before I make my decision. Does DSP construct a received signal? While Comm. Theory would focus on creating the signal and dealing with noise? Thanks
Back
Top