TP-Link TL-WN881ND manual Appendix B Glossary

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Appendix B: Glossary

TL-WN881ND300Mbps Wireless N PCI Express Adapter User Guide

Appendix B: Glossary

¾802.11b - 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.

¾802.11g - 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.

¾802.11n - 802.11n builds upon previous 802.11 standards by adding MIMO (multiple-input multiple-output). MIMO uses multiple transmitter and receiver antennas to allow for increased data throughput via spatial multiplexing and increased range by exploiting the spatial diversity, perhaps through coding schemes like Alamouti coding. The Enhanced Wireless Consortium (EWC) was formed to help accelerate the IEEE 802.11n development process and promote a technology specification for interoperability of next-generation wireless local area networking (WLAN) products.

¾Ad 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.

¾DSSS - (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).

¾FHSS - (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.

¾Infrastructure 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.

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Contents Rev TL-WN881ND 300Mbps Wireless N PCI Express AdapterCOPYRIGHT & TRADEMARKS FCC RF Radiation Exposure Statement FCC STATEMENTCountry CE Mark WarningNational Restrictions 2400.0-2483.5 MHzETSI EN 301 489-1 V1.8.12008 & ETSI EN 301 489-17 EN60950-12006 DECLARATION OF CONFORMITYProduct Description 300Mbps Wireless N PCI Express Adapter ETSI EN 300 328 V1.7.1CONTENTS Conventions Package ContentsTL-WN881ND 300Mbps Wireless N PCI Express Adapter User Guide 1.2 FeaturesChapter 1 Introduction 1.1 Product OverviewFlashing Quickly 1.3 Hardware OverviewStatus Working StatusChapter 2 Installation 2.1 Hardware Installation2.2 Software Installation TL-WN881ND 300Mbps Wireless N PCI Express Adapter User Guide5. Click Install to continue the setup 6. The utility and drivers will install. This may take 1~2 minutes TL-WN881ND 300Mbps Wireless N PCI Express Adapter User Guide 3.1 To connect using TWCU Chapter 3 Connect to a Wireless Network3. If word None appears behind the SSID, this means the network to be connected is not security-enabled and you can connect to the network without entering a key. To prevent outside intrusion and safeguard your network, it is strongly recommended to set a password to your router or access point 4. You have now successfully connected to your network. Click Close to enjoy the Internet 3.2.1 PBC Push Button Configuration method 3.2 To connect using QSS3. The adapter will be connecting to the target network 3.2.2 PIN method 2. The adapter will be connecting to the target network TL-WN881ND 300Mbps Wireless N PCI Express Adapter User Guide 3.3.1 In Windows 3.3 To connect using Windows built-in wireless utility3.3.2 In Windows Vista 2. The utility will display any available wireless networks in your area. Highlight the wireless network you would like to connect and then click Connect 3.3.3 In Windows XP Or double-click the utility icon to load the utility configuration page. Click Advanced in the tools section and then select Use Windows wireless configuration tool in the figure shown below. Click OK when Figure 3-25 appears to continue 3. The utility will display any available wireless networks in your area. Click on a network displayed using the SSID and click the Connect button 4.1 Profile Chapter 4 ManagementThe following items can be found on the screen 4.1.3 Delete a profile 4.1.2 Modify a profile4.2 Advanced 4.3 About Chapter 5 AP Mode ¾ SoftAP mode Select to enable or disable the function 6.1 Uninstall the utility software from your PC Chapter 6 Uninstall Software6.2 Uninstall the driver software from your PC Appendix A Specifications NormalEnvironmental and Physical Appendix B Glossary 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 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