Data Transmission

Data Transmission

Length: 1180 words (3.4 double-spaced pages)

Rating: Excellent

Open Document

Essay Preview

More ↓
Data Transmission

The purpose of this report is to describe some common data transmission terminology. This paper will discuss various data transmission (communication) protocols and how they are used in data communication.

Synchronous and Asynchronous:
Asynchronous serial transmission is a technique used in serial RS232 communication. The data is framed by a series of control bits known as the start bit, stop bit(s), parity bits and error checking bits. A transmit clock signal is used to clock the data over the transmission line to the receiving end. At the receiver, a clock signal, known as the receive clock, which corresponds to the transmit clock is used to decode the transmitted data back to the original by stripping off the control bits.
Synchronous transmission sends data packets, in contrast to Asynchronous transmission, which sends data one bit at a time. The data is surrounded by start and end frames. The start frame tells the receiver to synchronize its internal clock and to expect the incoming packets. The end frame marks the end of the packet.
Low speed data transmission uses asynchronous transmission. Because asynchronous transmission does not include error checking, it is not very efficient. Synchronous transmission, on the other hand is very efficient. Data is transmitted in blocks. Synchronous communication is well suited for high speed data transmission. The protocol has error checking capabilities.

Analog and Digital:
Analog signals represent continuously changing signal such as sound wave emitted from a speaker or an alternating current (sine wave) traveling on a wire. Digital signal, on the other hand is a digital representation of an analog signal, it is either off or on.

AM - Amplitude modulation and FM – Frequency modulations are means by which use to transmit analog signal. DM – Digital modulation is used to transmit digital signal (Analog vs Digital Transmission, 2005)

X on and X off:
X on / X off is a handshaking control signal used to control the flow of data communication. It works like this. A printer connect locally to computer use the X off control signal to notify the computer that the print buffer is full and should stop sending data. When the printer is ready for more data, the X on signal is send to signal the computer to resume data transfer.

Simplex and Duplex:
Simplex transmission is used transmit data in one direction only. It is like a one-way street for data.
Duplex transmission means that data is transmitted in both directions.

How to Cite this Page

MLA Citation:
"Data Transmission." 123HelpMe.com. 02 Apr 2020
    <https://www.123helpme.com/view.asp?id=158612>.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Secure Data Transmission Using Steganography Essays

- Introduction : These days internet is being used by people of different walks of life, who are facing more challenges in terms of data storage and transmission which in turn increases number of users in the network thereby considerably. In the advanced world, information is more essential of workstation interchanges and heart of worldwide economy. To guarantee the security of information, the idea of concealing has pulled in individuals to present an imaginative and innovative answers for secure information from falling into wrong hands....   [tags: cryptography, strategies]

Research Papers
2018 words (5.8 pages)

Essay about Data Transmission

- Data Transmission The purpose of this report is to describe some common data transmission terminology. This paper will discuss various data transmission (communication) protocols and how they are used in data communication. Synchronous and Asynchronous: Asynchronous serial transmission is a technique used in serial RS232 communication. The data is framed by a series of control bits known as the start bit, stop bit(s), parity bits and error checking bits. A transmit clock signal is used to clock the data over the transmission line to the receiving end....   [tags: Technology Definition Data Communication Research]

Free Essays
1180 words (3.4 pages)

Fiber Optics: Meeting Today's Data Transmission Requirements Essay

- Today’s data transmission requirements are high. Fiber optics, a technology used directly and indirectly in common items such as cell phones and other common and unexpected ways, is made of basic materials, but its uses are seemingly endless. Manufacturers have several different methods of manufacturing and testing optical fibers. Commercial quality fibers are made from quartz, but refined to make the flexible fibers that are used. Sending light through the fiber and checking the quality of the signal is one way to test optical fibers....   [tags: communication and computer technology]

Free Essays
524 words (1.5 pages)

Digital Networks: Thte Digital Subscriber Line Essay

- Introduction: Digital Subscriber Line (DSL) has started its origin from a telephone company desires to offer an end to end digital network as a service and named it as "integrated services digital network (ISDN)". Being a low speed in the communication is one of the major defect in ISDN. The low speed is due to the “crosstalk” between telephone lines, crosstalk is nothing but the electromagnetic coupling between lines. The crosstalk from all other telephone lines result in large noise which reduces the data rates....   [tags: crosstalk, data transmission, telephone]

Research Papers
1039 words (3 pages)

Fiber Optic Communication Essay

- Fiber optic communication has become necessary have to most of the big multinational companies and government agencies. Heavy investments have taken place in regards to this particular type of communication. Form the developed countries to the developing countries fiber optic communication has become the preferred means of data transmission. The following report will look at Fiber optics and fiber optic communications critically. The history of the fiber optics will be liked into as well as the basic fiber optic communication system....   [tags: data transmission, efficiency, information]

Research Papers
2718 words (7.8 pages)

Transmission of Multimedia Data over Wireless Ad-Hoc Networks Essay examples

- Transmission of Multimedia Data over Wireless Ad-Hoc networs A. Berk Barutlu Abstract Ad-hoc networking has been of increasing interest and therefore recognized as an important research area in recent years. This paper is about transmission of multimedia data over wireless ad-hoc networks, the problems and the related issues. 1. Introduction 1.1 Ad-Hoc Networks An ad-hoc network is a collection of wireless mobile nodes that will dynamically form a temporary network without the use of any existing network infrastructure....   [tags: essays research papers]

Research Papers
1649 words (4.7 pages)

Convolutional Coding Essay

- Overview: Convolutional codes(CC) are a very fast a unique method of encoding a message. They differ from other codes we have discussed in class, because most codes send a message and multiple parity check digits. These codes include but are not limited to, Hamming Codes, Parity Check codes, and Reed-Solomon codes and many others. Instead of transmitting the message and parity bits, Convolutional codes only transmit parity bits. This allows for a more accurately received message as the errors that would occur in transmission are easily detected, as well as having a smaller chance of occurring....   [tags: technology, parity bits, data transmission]

Research Papers
1112 words (3.2 pages)

Routers Essay

- TABLE OF CONTENTS Introduction …………………………………………………………………………2 Router Architecture …………………………….……….…………………………3 Basic Building Blocks ……………………………………………………………………………………………..3 Physical Components………………………………………………………………………………………………5 Router Architecture Classification …………………………………………7 First Generation……………………………………………………………………………………………………..7 Second Generation …….…………………………………………………………………………………………..8 Third Generation……..……………………………………………………………………………………………..9 Switching Architecture …………………………………………………………11 Output Queuing……………………………………………………………………………………………………..12 Input Queuing ……………………………………………………………………………………………………….12...   [tags: computer technology, data transmission]

Research Papers
3042 words (8.7 pages)

Analysis of a Transmission Model Essay

- Equipped with n antennas & the remote unit is equipped with m receive antennas (see Figure (1)). At each time slot t, signals C_t^i t=1,2,……n are transmitted simultaneously from the n transmit antennas. The channel is at-fading & the path gain from transmit antenna i to receive antenna j is denoted by h_(i,j) . The path gains are modeled as samples of independent complex Gaussian random variables with variance 0:5 per real dimension, i.e.,h_(i,j)~N(0,1) as we assume that signals received at di_erent antennas experience independent fading....   [tags: antena, transmission, generator matrix]

Research Papers
524 words (1.5 pages)

Essay On Data Mining

- Abstract:- This paper presents a brief idea about data mining, data mining technology, and big data. The applications regarding data mining will also be discussed briefly. The main cause of data mining is to get different ideas, how to access big data by different tools. Keywords- data mining, data mining technology, big data. I.INTRODUCTION Data mining refers to the use of data from big data source by using different tools in order to solve real time problems that include logistics management, scientific research, processing, financial decision making, retail, and medical research....   [tags: Data mining, Data analysis, Data]

Research Papers
734 words (2.1 pages)

There are two type of duplex transmission, there is half duplex in which data travels in both directions but not at the same time. An analogy of half-duplex transmission is two persons communicating using a walkie-talkie.
The protocol for this type of communications, is only one person can talk at one time. If both persons tries to talk at the same time, the conservation will become unintelligent and neither one will be able to understand the other one.
The other type of duplex transmission is the full-duplex transmission. In this type of communication, data transmission can travel in both directions at the same time.

Serial and Parallel transmission:
Serial transmission is a technique in which data is serialized into bits of information and is sent sequentially on a single communication channel or wire, rather than simultaneously as in parallel transmission. Serial transmission is the normal mode for data communication over the telephone lines using a modem. The RS232 serial communication was a popular interface between the computer and the modem. Data is transmitted one character at a time. Each character is encoded with a series start, stop and parity bits which formats the data so that it can be easily decoded at the receiving device. The format 7N1 means that 7 bit of data will be transmitted along 1 stop bit and no parity bit.
Parallel transmission is a technique in which data is transmitted on 2 or more bits simultaneous. Parallel transmission is faster than serial transmission because data is transmitted at the same time on all the available bits as apposed to one bit at a time. A popular parallel interface was the printer port on older computers; nowadays, the USB serial interface has replaced the parallel port.

Baseband and Broadband:
In Baseband Transmission, the entire bandwidth of the transmission medium is used by one signal. In Baseband signaling, only one signal can be transmitted on a time using one cable (or strand of wire); therefore, half duplex transmission is the only mode of transmission capable with baseband, meaning, communication is in only one direction at a time. Ethernet is an example of baseband transmission where all devices on the Ethernet cabling segment can eavesdrop on the communication signal traveling along the cable and only one device can communicate at a time, consuming the entire bandwidth of the cable.
Broadband transmission is the opposite of baseband. Broadband is a modulation technique that sends data bits encoded within a high carrier signal. The transmission medium may be shared by many simultaneous signals since each signal only uses part of the available bandwidth. Although communication is one-way, as was with baseband transmission, two communication channels are used, one for transmitting and one for receiving; therefore, full-duplex communication is used with broadband as half-duplex is used with baseband transmission.
Cable television and Digital Subscriber Line (DSL) are two very popular uses for broadband transmissions. In broadband cable TV, all the television channels that a particular cable company carries are transmitted on a single coaxial cable along with the possibility of an internet connection. The cable box tunes in one of the available frequencies (channels) on the cable.
In DSL broadband transmission, the phone company marries the computer information with ordinary voice frequencies and transmits them to the subscriber's hone on the regular old telephone copper wires.
Comparing Baseband and Broadband transmission, it is necessary to note that baseband transmission is a digital transmission using pulses to represent ‘ones' and ‘zeroes' and is a half-duplex mode of transmission, whereas broadband transmission is an analogy transmission using different frequencies to represent ‘ones' and ‘zeroes'. Baseband transmission is also transmitted in full-duplex mode by the use of two communication paths or channels.

Bandwidth:
Bandwidth is expressed in hertz (Hz), and is referred as the width between the high and low band of frequencies of a transmission channel when discussing analogy signals. In digital signals, bandwidth is usually expressed in bits per seconds or baud rates (bps) and is also a measure of a transmission channel's capacity for carry data. (What is Bandwidth - a definition from Whatis.com, 2006)

Data Packets:
A data packet is a multi-byte bundle of data, transmitted at one time by a station on the network. Included in a digital package are a series of bytes know as the header. The header contains some controlling information such as the destination address, the source address, the size of the data package, the payload and error detection and correction bits (CRC bits). (Packet)

References
Analog vs. Digital Transmission. (2005). Retrieved March 11, 2007, from www.fiber-optics.info: http://www.fiber-optics.info/articles/analog-v-digital.htm

What is Bandwidth - a definition from Whatis.com. (2006, November 6). Retrieved March 10, 2007, from http://searchnetworking.techtarget.com/sDefinition/0,290660,sid7_gci211634,00.html

Packet. (n.d.). Retrieved March 10, 2007, from Computer Home.com: http://www.computerhope.com/jargon/p/packet.htm
Return to 123HelpMe.com