iBall Baton iB-WRC300N, Руководство пользователя

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Appendix B: Glossary

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.

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.

Ad-hoc Network - An ad-hoc network is a group of computers, each with a
Wireless N USB 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.

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 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).