Intel Demonstrates 220Mbps Variant of UWB
MattyIce writes "InfoWorld has a story about a yet to be approved standard for a high-speed, short distance communications standard. Last year, Intel demonstrated 100MBPS speeds but they have bumped the speed up to 220MBPS this time." Fast stuff, but I imagine it'll be a long time before it comes to market. I haven't even upgraded my wireless network to 802.11g yet!
a high-speed, short distance communications standard. isn't that called shouting?
The article is talking about megabits (Mbps), not megabytes (MBps) as mentioned above. Capitalization matters on that acronym.
Originally the term "Ultra Wide Band" designated a special modulation technique but in February 2003 the FCC approved a standard to define UWB-communication as a communication with a minimal 10-dB bandwidth of 20% of the center frequency.
The original modulation scheme associated with UWB works almost as Pulse Position Modulation (PPM): Within a certain, fixed time slot a very short pulse with high energy is emitted. The position of the pulse is decided by a in advance determined code scheme. Depending of the code scheme and the pulse position, the time slot is interpreted as containing either a 0 or a 1.
The powerfull short pulses can be shown to have a very weak and very wide representation in the frequency domain. Without knowing the coding scheme in a link, a UWB signal is thus seen as noise.
Walls and other obstacles tend to obstruct certain specific frequencies only. Since UWB signals have Ultra Wide Bandwith, UWB communication can theroretically go through all kinds of natural obstacles very easily.
The hard part in UWB is making an antenna, that can actually emit signals with this very high bandwidth. Normal antennas are designed to emit in a narrow band. Thus, to make UWB work flawlessly, a lot of research must be made to make a good antenna.
Disclaimer: EE student (only) in the field of Wireless Communication Networks.
I was all excited when I saw the MBPS. Now I'm only 1/8 as excited.
This isn't Fox News guys.
You all need to sit down in a room and go over the (b)bits and (B)Bytes thing....