MSI US60SE, Руководство пользователя

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US60SE 108M Wireless USB Adapter User Guide
Appendix B: Glossary
¾
108M Super G
TM
WLAN Transmission Technology - 108M Super G
TM
WLAN
Transmission Technology employs multiple performance-enhancing techniques
including packet bursting, fast frames, data compression, and dynamic turbo mode
that combine to improve the throughput and range of wireless networking products.
Users can experience link rates of up to 108Mbps, twice the industry-standard
maximum data link rate of 54Mbps, while preserving full compatibility with traditional
802.11g or 802.11b networks. 108M Super G
TM
products offer the highest throughput
performance available on the market today. In dynamic 108M mode, the device can
attach 802.11b, 802.11g and 108Mbps Super G
TM
devices at the same time in an
integrated environment.
¾ 2x to 3x eXtended Range
TM
WLAN Transmission Technology - The WLAN device
with 2x to 3x eXtended Range
TM
WLAN transmission technology make its sensitivity up to
105 dB, which gives users the ability to have robust, longer-range wireless connections.
With this range-enhancing technology, a 2x to 3x eXtended Range
TM
based client and
access point can maintain a connection at as much as three times the transmission
distance of traditional 802.11b and 802.11g products, for a coverage area that is up to nine
times greater. A traditional 802.11b and 802.11g product transmission distance is about
300m, A MSI 2x to 3x eXtended Range
TM
based client and access point can maintain a
connection transmission distance may be up to 830m.
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 ( D irect- S equence S pread S pectrum) - 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 for
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
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