Survey Of Wireless Computing

5705 words - 23 pages

Intro Sample...


Wireless technology can provide many benefits to computing including faster response to queries,
reduced time spent on paperwork, increased online time for users, just-in-time and real time control,
tighter communications between clients and hosts. Wireless Computing is governed by two general
forces: Technology, which provides a set of basic building blocks and User Applications, which
determine a set of operations that must be carried out efficiently on demand. This paper summarizes
technological changes that are underway and describes their impact on wireless computing development
and implementation. It also describes the applications that influence the development and
implementation of wireless computing and shows... View More »

Body Sample...


However, you lose the connectivity when out of the office unless you have a
wireless means of communicating.

On the compatibility issue, the ability to mix wireless brands on a single network is not likely to come
soon. The IEEE Standards Committee is working on a wireless LAN standard -- 802.11, which is an
extension of the Ethernet protocol. Because the field of wireless communication is so broad, the IEEE
was not able to set a standard by the time private researchers were ready to test their theories hoping to
set the standard for others to follow.

2 Methods

There are a few methods of wireless communication being theorized and tested.
(1) Radio: This is the method that makes use of standard radio waves in the 902 MHz to 928 MHz
frequency range. Although these frequencies are well used, methods have been developed to
ensure data integrity. Spread spectrum transmission of data is a method where the transmitter
will send information simultaneously out over many frequencies in the range increasing the
change that all data will eventually reach the receiver. Frequency hopping is an additional
measure that also enables data security. The 26 MHz range of frequencies is further divided in
to channels. The transmitter then sends out data hopping from one channel to the next in a
certain pattern known to the receiver. Within each channel, spread spectrum transmission can
be used to maintain interference avoidance. Some of this transmission manipulation can be
avoided by transmitting at a frequency that is less used. ...

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