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Glossary

 




 

 

Glossary

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IEEE standard that specifies medium-access and physical-layer specifications for 1Mbps and 2Mbps wireless connectivity between fixed, portable, and moving stations within a local area.

10-Gigabit Ethernet

A single-wire (plus ground) communications protocol.

A 1-Wire interface master controller.

3G

Third-generation mobile telephone protocols that support higher data rates, for non-voice communications such as multimedia and Internet access.

Third Generation Partnership Project, a collaboration of cell phone technology standards bodies. www.3gpp.org/.

4G

4th Generation mobile telephony standard with a potential speed of up to 1 gigabit per second for data transfer.

5G

Upcoming 5th Generation mobile telephony standard that can potentially transfer data at up to 20 gigabit per second.

The IEEE standard that governs the deployment of 5GHz OFDM systems. It specifies the implementation of the physical layer for wireless UNII b.

IEEE 802.11ac is a wireless networking standard in the 802.11 family (which is marketed under the brand name Wi-Fi), on the 5 GHz band. The specification has multi-station throughput of at least 1 gigabit per second and single-link throughput of at least

An international IEEE standard for WLAN networks, operating at 2.4GHz and providing a maximum data transfer rate of 11Mbps.

A proposed standard that describes a wireless networking method for a WLAN that operates in the 2.4GHz radio band (ISM: Industrial Scientific Medical frequency band). It transfers data at up to 54Mbps.

An IEEE 802.11 Wi-Fi standard that increases transmission speeds to 600 Mbps and works in both the 2.4 GHz and 5 GHz frequency bands (see dual-band router).

Analog to digital. Specifically: A/D converter, a circuit that converts analog signals into a stream of digital data.

A sensor or transducer for measuring acceleration.

Advanced Configuration and Power Interface: An industry-standard specification (co-developed by Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba) for operating-system-directed power management for laptop, desktop, and server computers. A replacemen

Adjacent (alternate)-channel power ratio

ACR

Accumulated current register

ADM

Add/Drop Multiplexer: A synchronous transmission network (SDH or Sonet) can carry multiple channels. An Add/Drop Multiplexer is a device that adds (inserts) or drops (removes) lower-data-rate channel traffic from the higher-rate aggregated channel.

Adaptive Differential Pulse Code Modulation: A compression technique that encodes only the difference between sequential samples.

 

 



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