Tp-Link TL-WN781ND [40/41] Appendix b glossary
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TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
33
Appendix B: Glossary
¾ 802.11b - The 802.11b standard specifies a wireless product networking at 11 Mbps using
direct-sequence spread-spectrum (DSSS) technology and operating in the unlicensed radio
spectrum at 2.4GHz, and WEP encryption for security. 802.11b networks are also referred to
as Wi-Fi networks.
¾ 802.11g - specification for wireless networking at 54 Mbps using direct-sequence
spread-spectrum (DSSS) technology, using OFDM modulation and operating in the
unlicensed radio spectrum at 2.4GHz, and backward compatibility with IEEE 802.11b devices,
and WEP encryption for security.
¾ Ad-hoc Network - An ad-hoc network is a group of computers, each with a Wireless Adapter,
connected as an independent 802.11 wireless LAN. Ad-hoc wireless computers operate on a
peer-to-peer basis, communicating directly with each other without the use of an access point.
Ad-hoc mode is also referred to as an Independent Basic Service Set (IBSS) or as
peer-to-peer mode, and is useful at a departmental scale or SOHO operation.
¾ DSSS - (Direct-Sequence Spread Spectrum) - DSSS generates a redundant bit pattern for all
data transmitted. This bit pattern is called a chip (or chipping code). Even if one or more bits in
the chip are damaged during transmission, statistical techniques embedded in the receiver
can recover the original data without the need of retransmission. To an unintended receiver,
DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband
receivers. However, to an intended receiver (i.e. another wireless LAN endpoint), the DSSS
signal is recognized as the only valid signal, and interference is inherently rejected (ignored).
¾ FHSS - (Frequency Hopping Spread Spectrum) - FHSS continuously changes (hops) the
carrier frequency of a conventional carrier several times per second according to a
pseudo-random set of channels. Because a fixed frequency is not used, and only the
transmitter and receiver know the hop patterns, interception of FHSS is extremely difficult.
¾ Infrastructure Network - An infrastructure network is a group of computers or other devices,
each with a Wireless Adapter, connected as an 802.11 wireless LAN. In infrastructure mode,
the wireless devices communicate with each other and to a wired network by first going
through an access point. An infrastructure wireless network connected to a wired network is
referred to as a Basic Service Set (BSS). A set of two or more BSS in a single network is
referred to as an Extended Service Set (ESS). Infrastructure mode is useful at a corporation
scale, or when it is necessary to connect the wired and wireless networks.
¾ Spread Spectrum - Spread Spectrum technology is a wideband radio frequency technique
developed by the military for use in reliable, secure, mission-critical communications systems.
It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other
words, more bandwidth is consumed than in the case of narrowband transmission, but the
trade off produces a signal that is, in effect, louder and thus easier to detect, provided that the
receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is
Содержание
- Mbps wireless lite n pci express adapter 1
- Tl wn781nd 1
- Copyright trademarks 2
- Fcc rf radiation exposure statement 3
- Fcc statement 3
- Ce mark warning 4
- Country restriction reason remark 4
- National restrictions 4
- The eu directive 1999 5 ec without any limitation except for the countries mentioned below 4
- This device is intended for home and office use in all eu countries and other countries following 4
- This is a class b product in a domestic environment this product may cause radio interference in 4
- Which case the user may be required to take adequate measures 4
- Declaration of conformity 5
- Shenzhen p r china 5
- South building no keyuan road central zone science technology park nanshan 5
- Tp link technologies co ltd 5
- Chapter 1 introduction 2 6
- Chapter 2 installation guide 4 6
- Chapter 3 configuration for windows xp 14 6
- Chapter 4 qss configuration 26 6
- Contents 6
- Package contents 1 6
- Appendix a specifications 32 7
- Appendix b glossary 33 7
- Conventions 8
- Package contents 8
- Chapter 1 introduction 9
- Features 9
- Overview of the product 9
- Led status 10
- Chapter 2 installation guide 11
- Hardware installation 11
- Overview 11
- Software installation 11
- Software installation for windows xp 11
- Software installation for windows vista 16
- Chapter 3 configuration for windows xp 21
- Current status 21
- Add or modify a configuration profile 23
- Profile management 23
- Export a profile 28
- Export a profile 3 export a profile 28
- Import a profile 28
- Remove a profile 28
- Remove a profile remove a profile 28
- Switch another profile 28
- Switch another profile 3 switch another profile 28
- Scan available networks 29
- Auto profile selection management 30
- Check driver information 31
- Diagnostics 31
- Check receive and transmit statistical information 32
- Chapter 4 qss configuration 33
- Pbc push button configuration method 34
- Enter a pin into your ap device 36
- Pin method 36
- Enter the pin from your ap device 38
- Appendix a specifications 39
- Appendix b glossary 40
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