Linksys WMP54GX manual What is DSSS? What is FHSS? And what are their differences?, What is WEP?

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Wireless-G PCI Adapter with SRX

the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).

What is DSSS? What is FHSS? And what are their differences?

Frequency-Hopping Spread-Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-Sequence Spread- Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers.

Would the information be intercepted while transmitting on air?

The Adapter features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, the Adapter offers a variety of security methods, including WEP and WPA, to enhance security and access control. For more information, refer to “Appendix C: Wireless Security.”

What is WEP?

WEP is Wired Equivalent Privacy, a data privacy mechanism based on a shared key algorithm, as described in the

IEEE 802.11 standard. For more information, refer to “Appendix C: Wireless Security.”

What is WPA?

WPA is Wi-Fi Protected Access, a wireless security protocol that can be used in conjunction with a RADIUS server.

For more information, refer to “Appendix C: Wireless Security.”

What is RADIUS?

RADIUS is Remote Authentication Dial-In User Service, which uses an authentication server to control network access. For more information, refer to “Appendix C: Wireless Security.”

Appendix A: Troubleshooting

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Frequently Asked Questions

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Contents 802 GHz .11g Wireless- G Copyright and Trademarks How to Use This User GuideWord definition Table of Contents Wireless-G PCI Adapter with SRX Adapter’s LED Adapter’s Connectors for the Antenna CablesWPA2-Personal Needed for Connection Adapter a device that adds network functionality to your PC IntroductionWelcome What’s in This User Guide?Introduction What’s in This User Guide? Topology the physical layout of a network Planning Your Wireless NetworkNetwork Topology RoamingNetwork Layout Overview Getting to Know the Wireless-G Notebook Adapter with SRXLED Indicator Cable ConnectorsSetup Wizard’s Welcome Screen Starting the Setup WizardWindows will begin copying the files onto your PC Installing the AdapterAvailable Wireless Network Screen Setting Up the AdapterWEP Key Needed for Connection Setting Up the Adapter with an Available NetworkWPA-Personal Needed for Connection 12 Available Wireless Network Screen Setting Up the Adapter with Manual Setup14 Wireless Mode Screen WEP 19 Wireless Security WPA2 Personal Screen EAP-TLS Radius 23 Confirm New Settings Screen Link Information Screens Using the Wireless Network MonitorAccessing the Wireless Network Monitor Wireless Network Status screenMore Information Wireless Network Status Screen Wireless Network StatusMore Information Wireless Network Statistics Screen Wireless Network StatisticsSite Information Site SurveyWPA2-Personal Needed for Connection Profiles Screen Profiles12 Create a New Profile Creating a New Profile14 Available Wireless Network Screen 16 WPA-Personal Needed for Connection 20 Network Settings Screen 21 Wireless Mode Screen 24 Wireless Security Screen 27 Wireless Security WPA2 Personal Screen 28 Wireless Security WPA Enterprise Using EAP-TLS Screen Radius 32 Congratulations Screen Common Problems and Solutions Appendix a Troubleshooting Wireless-G PCI Adapter does not work properly What Ieee 802.11b features are supported? Frequently Asked QuestionsWhat is the Ieee 802.11b standard? What is the Ieee 802.11g standard?What is ISM band? What is ad-hoc mode?What is infrastructure mode? What is roaming?What is RADIUS? What is DSSS? What is FHSS? And what are their differences?What is WEP? What is WPA?Figure B-1 Wireless Network Monitor Icon Appendix B Using Windows XP Wireless Zero ConfigurationFigure B-4 Available Wireless Network Figure B-6 Network Connection Wireless Security Security Precautions Appendix C Wireless SecuritySecurity Threats Facing Wireless Networks Appendix C Wireless Security Wireless-G PCI Adapter with SRX Shared Resources Appendix D Windows HelpNetwork Neighborhood/My Network Places Appendix E Glossary Wireless-G PCI Adapter with SRX Wireless-G PCI Adapter with SRX Appendix F Specifications Storage Temp Operating TempOperating Humidity Max % Non-Condensing Storage Humidity Limited Warranty Appendix G Warranty InformationFCC Statement Appendix H Regulatory InformationSafety Notices Appendix I Contact Information
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