Task Group 3: High Rate WPAN
See also: UWB Forum and WiMedia AllianceIEEE 802.15.3-2003 is a MAC and PHY standard for high-rate (11 to 55 Mbit/s) WPANs.
IEEE 802.15.3a was an attempt to provide a higher speed UWB PHY enhancement amendment to IEEE 802.15.3 for applications which involve imaging and multimedia. The members of the task group were not able to come to an agreement choosing between two technology proposals, Multi-band Orthogonal Frequency Division Multiplexing (MB-OFDM) and Direct Sequence UWB (DS-UWB), on the table backed by two different industry alliances and was withdrawn in January 2006.
IEEE 802.15.3b-2005 amendment was released on May 5, 2006. It enhanced 802.15.3 to improve implementation and interoperability of the MAC. This will include minor optimizations while preserving backward compatibility. In addition, this amendment corrected errors, clarified ambiguities, and added editorial clarifications.
IEEE 802.15.3c-2009 was published on September 11, 2009. The task group TG3c developed a millimeter-wave-based alternative physical layer (PHY) for the existing 802.15.3 Wireless Personal Area Network (WPAN) Standard 802.15.3-2003. The IEEE 802.15.3 Task Group 3c (TG3c) was formed in March 2005. This mmWave WPAN operates in clear band including 57–64 GHz unlicensed band defined by FCC 47 CFR 15.255. The millimeter-wave WPAN will allow high coexistence (close physical spacing) with all other microwave systems in the 802.15 family of WPANs. In addition, the millimeter-wave WPAN allows very high data rate over 2 Gbit/s applications such as high speed internet access, streaming content download (video on demand, HDTV, home theater, etc.), real time streaming and wireless data bus for cable replacement. Optional data rates in excess of 3 Gbit/s will be provided.
Read more about this topic: IEEE 802.15
Famous quotes containing the words task, group, high and/or rate:
“Or seen the furrows shine but late upturned,
And where the fieldfare followed in the rear,
When all the fields around lay bound and hoar
Beneath a thick integument of snow.
So by Gods cheap economy made rich
To go upon my winters task again.”
—Henry David Thoreau (18171862)
“I cant think of a single supposedly Black issue that hasnt wasted the original Black target group and then spread like the measles to outlying white experience.”
—June Jordan (b. 1936)
“Saul and Jonathan were lovely and pleasant in their lives, and in
their death they were not divided: they were swifter than eagles, they were stronger than lions.
Ye daughters of Israel, weep over Saul, who clothed you in scarlet,
with other delights, who put on ornaments of gold upon your apparel.
How are the mighty fallen in the midst of the battle!
Jonathan, thou wast slain in thine high places.”
—Bible: Hebrew Second Samuel (l. I, 2325)
“If I die prematurely at any rate I shall be saved from being bored to death at my own success.”
—Samuel Butler (18351902)