Skip to content

Download e-book for kindle: Computer Communications and Networks by John R. Freer BSc, DMS, CEng, FIEE (auth.)

By John R. Freer BSc, DMS, CEng, FIEE (auth.)

ISBN-10: 1461283051

ISBN-13: 9781461283058

ISBN-10: 1461310415

ISBN-13: 9781461310419

Computer communications is among the so much swiftly constructing applied sciences and it's a topic with which all people within the computers occupation might be universal. machine communications and networks is an advent to communications expertise and procedure layout for working towards and aspiring computing device execs. the topic is defined from the pc approach designer's perspective instead of from the communications engineer's perspective. The presentation is acceptable for introductory studying in addition to for reference. The emphasis is on useful, instead of theoretical, facets and on know-how on the way to develop into extra very important sooner or later. nearly all of the subject material applies to civil and armed forces communications yet a few points that are exact to army functions were incorporated the place thought of signifi­ cant. laptop communications is a speedily altering and hugely advanced topic. enough useful wisdom of the topic isn't really often received at collage or collage yet is usually built over a interval of numerous years through trial and mistake, attending classes, interpreting reference books and journals; this e-book makes an attempt to simplify and accelerate the method by means of bringing jointly a physique of data that is differently disbursed all through many books and journals. the data is gifted in a framework which makes a much wider knowing of the topic attainable. uncomplicated wisdom of communications is believed, a basic famil­ iarity with computers is expected in later chapters, and, the place appropriate, conception is explained.

Show description

Read Online or Download Computer Communications and Networks PDF

Best communications books

Ramakrishna Janaswamy's Radiowave Propagation and Smart Antennas for Wireless PDF

Priceless as a textual content in addition to a reference, this can be one of many first books of its variety to mix uncomplicated and complicated issues of radiowave propagation and clever antennas right into a unmarried quantity. The booklet is interdisciplinary in nature and includes fabric drawn from the electromagnetics and communications parts.

Media and the Rhetoric of Body Perfection: Cosmetic Surgery, by Deborah Harris-Moore PDF

Opposed to the heritage of the so-called 'obesity epidemic', Media and the Rhetoric of physique Perfection severely examines the discourses of actual perfection that pervade Western societies, laying off new mild at the rhetorical forces at the back of physique anxieties and severe tools of weight-loss and beautification.

Read e-book online Communicating, Networking, Interacting: The International PDF

This publication illustrates the advantages to be received from digitally networked conversation for overall healthiness, schooling and transitioning economies in constructing international locations (Sierra Leone and Papua New Guinea) and constructed international locations. transforming into powers of e-citizenship might help construct sustainable futures. This small quantity presents a set of examples and concepts from which the authors desire can assist construct a much broader source.

Download e-book for iPad: Image Processing and Communications Challenges 8: 8th by Ryszard S. Choraś

This publication collects a chain of study papers within the region of photo Processing and Communications which not just introduce a precis of present expertise but in addition supply an outlook of power function difficulties during this zone. the main aim of the e-book is to supply a suite of accomplished references on a few contemporary theoretical improvement in addition to novel functions in photo processing and communications.

Extra resources for Computer Communications and Networks

Sample text

3OG- i-lcm 3G - .... 10cm 3OOM- -1m 3OM- -10m 3M - -100m 300k - -1000m 3Ok- -10km 3k - i-lookm 300 - i-l000km Infra low Frequency (llF) Extremely low Frequencies (ELF) sight SHF transmissions do not suffer from many of the propagation and interference problems of lower-frequency bands and the higherfrequency transmission makes it possible to transmit data at many Mbit/s. The earliest microwave systems carried television signals and frequency division multiplexed telephony links but they are now used extensively to carry time division multiplexed data channels.

In these applications it is important to maximise the bandwidth and length of cable between repeaters where regeneration of the signal is required. This makes the attenuation per kilometre and the bandwidth-distance relationship (in MHz-km) critical factors. 1 0 shows the relationship between attenuation and bandwidth-distance for the more common forms of optical fibre. An optical fibre consists of a glass or plastic core surrounded by a cladding made of a similar material but with a lower refractive index.

ISO HDLC. ISO HDLC. CRC-16. FEC block or convolution. ISO HDLC or block. 21/23 modem compatibility. All-digital cellular systems are being proposed to cope with the predicted saturation of the analog systems by 1990. Three modulation and multiple access schemes have been proposed: 1) Wideband time division multiple access (TDMA). 2) Narrowband time division multiple access. 3) Slow-frequency-hopping code division multiple access (CDMA). Voice transmission will be achieved by digiti sing speech at 16 kbit/s; this will be stored in blocks and transmitted in the slots of a TDMA system or by spreading it over a wide bandwidth along with many other CDMA signals to make more channels available.

Download PDF sample

Computer Communications and Networks by John R. Freer BSc, DMS, CEng, FIEE (auth.)

by Mark

Rated 4.20 of 5 – based on 33 votes