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Radio System Design for Telecommunication (Wiley Series in Telecommunications and Signal Processing
30.09.2010, 10:54
Radio System Design for Telecommunication (Wiley Series in Telecommunications and Signal Processing

This book provides the essential design techniques for radio systems that
operate at frequencies of 3 MHz to 100 GHz and which will be employed in
the telecommunication service. We may also call these wireless systems,
wireless being synonymous with radio, Telecommunications is a vibrant industry,
particularly on the ‘‘radio side of the house.’’ The major supporter of this
upsurge in radio has been the IEEE and its 802 committees. We now devote
an entire chapter to wireless LANsŽWLANs.detailed in IEEE 802.11. We
also now have subsections on IEEE 802.15, 802.16, 802.20 and the wireless
metropolitan area networkŽWMAN.. WiFi, WiMax,, and UWBŽultra wide-
band. are described where these comparatively new radio specialties are
demonstrating spectacular growth.
Systems operating above 10 GHz are taking on more importance due to
the shortage of radio frequency spectrum. We include the new look given to
rainfall loss by the ITU-R organization. In this text the dividing line has been
set at 10 GHz between where excess attenuation can basically be neglected
and above which its impact on link design must be included. The U.S. armed
forces set the line at 6 GHz. We recommend the ITU-R method for the
calculation of excess attenuation due to rainfall. The reader is cautioned here
because of seeming changes in approach by ITU-R to calculate rainfall loss.
Chapter 12 covers broadband radio, and we have devoted an entire
chapter to this subject because of its growing importance in telecommunication.
This chapter also covers in some detail OFDM Žoffset frequency
division multiplex., a comparatively new technique to transmit information in
an interference environment.
Cellular radio by satellite has not blossomed as forecasted in the last
edition. On the other hand, VSATŽvery small aperture satellite terminal.
systems have indeed become popular with the user. The rationale for their
deployment varies. They can of course be classified as an economic alternative
to connectivity via the public switched telecommunication network
ŽPSTN.and the term for this is bypass.
Another example was a bank in an emerging nation where we offered a
satellite communication course. This bank had 120 branches with no direct
by installing a VSAT network with its hub located in the bank’s
headquarters in the nation’s capital. Intentional bypass of the international
PSTN may be another reason. In some countries, it is argued, that such
networks are more cost-effective and efficient.
For subject completeness, we continue with our chapters on high-frequency
ŽHF.communications and meteor burstŽMBC.. Few other texts cover these
two radio transmission technologies, although they are still widely used by
the U.S. armed forces ŽHF. and for cost-effective sensor systems Žmeteor
The first 14 chapters are arranged in a hierarchical manner. For example,
Chapter 1 deals with general propagation problems. Propagation peculiar to
a certain radio transmission method is addressed by discussing topics such as
tropospheric scatter, HF, meteor burst, and cellular radio. Chapters 2 and 3
deal with line-of-sight microwave transmission. Chapter 5, 6, 7, and 8 are
outgrowths of this topic. Chapters 6, 7, and 8 depend on information
discussed in Chapter 4Žforward-error correction..
The reader is only expected to have a working knowledge of electrical
communication, algebra, trigonometry, logarithms and time distributions.
The decibel and its many derivative forms are used widely throughout. The
more difficult communication concepts are referenced to other texts or
standards for further reading or clarification. Nearly every key formula is
followed by at least one worked example. A set of review questions and
problems can be found at the end of each Chapter. These are meant as a
review and can be worked out without resorting to other texts.
We have followed international practice of labeling ITU Radio Communication
SectorŽi.e., ITU-R.standards. For some of those standards produced
before January 1, 1993, we use the older conventional CCIR nomenclature.
Those standards published after that date are called ITU-R recommendations.

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