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09 March 2010
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RF Special Section
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Welcome to the RF Design Special Section of Communication Systems Design.
The following
information-packed pages will focus on RF design issues in two emerging wireless networking technologies:
HomeRF
and Bluetooth.
We chose to focus on these two technologies because of their "sex appeal" and because of the fact that late
2000 is the timeframe for prototypes of these de facto standards-based products to hit the market. Additionally,
these two technologies are often pitted against each other as competing for the home network. As you will see
from these articles, the technologies have two very different uses. This can be explained by the loose
federations of companies who created them. For example,
Ericsson and other mobile handset/computer
manufacturers came up with the Bluetooth concept, and, therefore, it will be targeted towards the mobile
handheld market. HomeRF was conceived by the home PC market, and is thus more aptly pitted against
HomePNA (the home phoneline association, read: wired) technology for connecting the entire home.
There are considerable RF/physical layer design issues associated with these technologies represented in the
following articles. Don't forget the final Trends
page of this section which gives some analyst numbers for the
future of these technologies as well as for WLAN (802.11) usage. As expected, the analysts are wild about these
technologies. But the design articles shed the real light on the difficulties of these emerging technologies.
Enjoy!
Nicole Westmoreland
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Features:
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Designing Cableless Devices with the Bluetooth Specification
By Buckhard Gehring and Stelios Koutroubinas
Interoperability (among other things) is a key issue when designing
Bluetooth-compliant products that replace
RS-232, parallel, USB, and other types of cable used in computers, handheld devices, digital cameras, and
other mobile products today.
HomeRF: Wireless Networking for the Connected Home
By David Koberstein
The HomeRF spec focuses on low-cost implementations for connecting the home without the requisite wires. Using a
protocol called SWAP, both voice and data traffic can be carried to and from the PSTN and is optimized for the home environment.
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Trends:
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